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sin(x+y)*sin(x)*sin(y) если y=1/4

Выражение, которое надо упростить:

Решение

Вы ввели [src]
sin(x + y)*sin(x)*sin(y)
$$\sin{\left(x \right)} \sin{\left(y \right)} \sin{\left(x + y \right)}$$
sin(x + y)*sin(x)*sin(y)
Подстановка условия [src]
sin(x + y)*sin(x)*sin(y) при y = 1/4
подставляем
sin(x + y)*sin(x)*sin(y)
$$\sin{\left(x \right)} \sin{\left(y \right)} \sin{\left(x + y \right)}$$
sin(x)*sin(y)*sin(x + y)
$$\sin{\left(x \right)} \sin{\left(y \right)} \sin{\left(x + y \right)}$$
переменные
y = 1/4
$$y = \frac{1}{4}$$
sin(x)*sin((1/4))*sin(x + (1/4))
$$\sin{\left((1/4) \right)} \sin{\left(x \right)} \sin{\left((1/4) + x \right)}$$
sin(x)*sin(1/4)*sin(x + 1/4)
$$\sin{\left(\frac{1}{4} \right)} \sin{\left(x \right)} \sin{\left(x + \frac{1}{4} \right)}$$
sin(1/4)*sin(x)*sin(1/4 + x)
$$\sin{\left(\frac{1}{4} \right)} \sin{\left(x \right)} \sin{\left(x + \frac{1}{4} \right)}$$
sin(1/4)*sin(x)*sin(1/4 + x)
Раскрыть выражение [src]
   2                       2                 
sin (x)*cos(y)*sin(y) + sin (y)*cos(x)*sin(x)
$$\sin^{2}{\left(x \right)} \sin{\left(y \right)} \cos{\left(y \right)} + \sin{\left(x \right)} \sin^{2}{\left(y \right)} \cos{\left(x \right)}$$
(cos(x)*sin(y) + cos(y)*sin(x))*sin(x)*sin(y)
$$\left(\sin{\left(x \right)} \cos{\left(y \right)} + \sin{\left(y \right)} \cos{\left(x \right)}\right) \sin{\left(x \right)} \sin{\left(y \right)}$$
(cos(x)*sin(y) + cos(y)*sin(x))*sin(x)*sin(y)
Собрать выражение [src]
  sin(2*x + 2*y)   sin(2*x)   sin(2*y)
- -------------- + -------- + --------
        4             4          4    
$$\frac{\sin{\left(2 x \right)}}{4} + \frac{\sin{\left(2 y \right)}}{4} - \frac{\sin{\left(2 x + 2 y \right)}}{4}$$
-sin(2*x + 2*y)/4 + sin(2*x)/4 + sin(2*y)/4
Тригонометрическая часть [src]
           1            
------------------------
csc(x)*csc(y)*csc(x + y)
$$\frac{1}{\csc{\left(x \right)} \csc{\left(y \right)} \csc{\left(x + y \right)}}$$
                   1                   
---------------------------------------
csc(pi - x)*csc(pi - y)*csc(pi - x - y)
$$\frac{1}{\csc{\left(- x + \pi \right)} \csc{\left(- y + \pi \right)} \csc{\left(- x - y + \pi \right)}}$$
   /    pi\    /    pi\    /        pi\
cos|x - --|*cos|y - --|*cos|x + y - --|
   \    2 /    \    2 /    \        2 /
$$\cos{\left(x - \frac{\pi}{2} \right)} \cos{\left(y - \frac{\pi}{2} \right)} \cos{\left(x + y - \frac{\pi}{2} \right)}$$
  sin(2*(x + y))   sin(2*x)   sin(2*y)
- -------------- + -------- + --------
        4             4          4    
$$\frac{\sin{\left(2 x \right)}}{4} + \frac{\sin{\left(2 y \right)}}{4} - \frac{\sin{\left(2 \left(x + y\right) \right)}}{4}$$
                   1                   
---------------------------------------
   /    pi\    /    pi\    /        pi\
sec|x - --|*sec|y - --|*sec|x + y - --|
   \    2 /    \    2 /    \        2 /
$$\frac{1}{\sec{\left(x - \frac{\pi}{2} \right)} \sec{\left(y - \frac{\pi}{2} \right)} \sec{\left(x + y - \frac{\pi}{2} \right)}}$$
                   1                   
---------------------------------------
   /pi    \    /pi    \    /pi        \
sec|-- - x|*sec|-- - y|*sec|-- - x - y|
   \2     /    \2     /    \2         /
$$\frac{1}{\sec{\left(- x + \frac{\pi}{2} \right)} \sec{\left(- y + \frac{\pi}{2} \right)} \sec{\left(- x - y + \frac{\pi}{2} \right)}}$$
     2/x\    2/y\    /x\    /y\    /x   y\
8*cos |-|*cos |-|*tan|-|*tan|-|*tan|- + -|
      \2/     \2/    \2/    \2/    \2   2/
------------------------------------------
                    2/x   y\              
             1 + tan |- + -|              
                     \2   2/              
$$\frac{8 \cos^{2}{\left(\frac{x}{2} \right)} \cos^{2}{\left(\frac{y}{2} \right)} \tan{\left(\frac{x}{2} \right)} \tan{\left(\frac{y}{2} \right)} \tan{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\tan^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)} + 1}$$
                      /x\    /y\    /x\    /y\    /x + y\
4*(1 + cos(x + y))*cos|-|*cos|-|*sin|-|*sin|-|*sin|-----|
                      \2/    \2/    \2/    \2/    \  2  /
---------------------------------------------------------
                           /x + y\                       
                        cos|-----|                       
                           \  2  /                       
$$\frac{4 \left(\cos{\left(x + y \right)} + 1\right) \sin{\left(\frac{x}{2} \right)} \sin{\left(\frac{y}{2} \right)} \sin{\left(\frac{x + y}{2} \right)} \cos{\left(\frac{x}{2} \right)} \cos{\left(\frac{y}{2} \right)}}{\cos{\left(\frac{x + y}{2} \right)}}$$
                      /x\    /y\    /x   y\    /x\    /y\    /x + y\
4*(1 + cos(x + y))*cos|-|*cos|-|*sec|- + -|*sin|-|*sin|-|*sin|-----|
                      \2/    \2/    \2   2/    \2/    \2/    \  2  /
$$4 \left(\cos{\left(x + y \right)} + 1\right) \sin{\left(\frac{x}{2} \right)} \sin{\left(\frac{y}{2} \right)} \sin{\left(\frac{x + y}{2} \right)} \cos{\left(\frac{x}{2} \right)} \cos{\left(\frac{y}{2} \right)} \sec{\left(\frac{x}{2} + \frac{y}{2} \right)}$$
               /x\    /y\    /x   y\         
          8*tan|-|*tan|-|*tan|- + -|         
               \2/    \2/    \2   2/         
---------------------------------------------
/       2/x\\ /       2/y\\ /       2/x   y\\
|1 + tan |-||*|1 + tan |-||*|1 + tan |- + -||
\        \2// \        \2// \        \2   2//
$$\frac{8 \tan{\left(\frac{x}{2} \right)} \tan{\left(\frac{y}{2} \right)} \tan{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\left(\tan^{2}{\left(\frac{x}{2} \right)} + 1\right) \left(\tan^{2}{\left(\frac{y}{2} \right)} + 1\right) \left(\tan^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)} + 1\right)}$$
               /x\    /y\    /x   y\         
          8*cot|-|*cot|-|*cot|- + -|         
               \2/    \2/    \2   2/         
---------------------------------------------
/       2/x\\ /       2/y\\ /       2/x   y\\
|1 + cot |-||*|1 + cot |-||*|1 + cot |- + -||
\        \2// \        \2// \        \2   2//
$$\frac{8 \cot{\left(\frac{x}{2} \right)} \cot{\left(\frac{y}{2} \right)} \cot{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\left(\cot^{2}{\left(\frac{x}{2} \right)} + 1\right) \left(\cot^{2}{\left(\frac{y}{2} \right)} + 1\right) \left(\cot^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)} + 1\right)}$$
                                  8                                   
----------------------------------------------------------------------
/       1   \ /       1   \ /         1     \    /x\    /y\    /x   y\
|1 + -------|*|1 + -------|*|1 + -----------|*cot|-|*cot|-|*cot|- + -|
|       2/x\| |       2/y\| |       2/x   y\|    \2/    \2/    \2   2/
|    cot |-|| |    cot |-|| |    cot |- + -||                         
\        \2// \        \2// \        \2   2//                         
$$\frac{8}{\left(1 + \frac{1}{\cot^{2}{\left(\frac{x}{2} \right)}}\right) \left(1 + \frac{1}{\cot^{2}{\left(\frac{y}{2} \right)}}\right) \left(1 + \frac{1}{\cot^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)}}\right) \cot{\left(\frac{x}{2} \right)} \cot{\left(\frac{y}{2} \right)} \cot{\left(\frac{x}{2} + \frac{y}{2} \right)}}$$
                                              /x\    /y\    /x + y\
(1 + cos(x))*(1 + cos(y))*(1 + cos(x + y))*sin|-|*sin|-|*sin|-----|
                                              \2/    \2/    \  2  /
-------------------------------------------------------------------
                         /x\    /y\    /x + y\                     
                      cos|-|*cos|-|*cos|-----|                     
                         \2/    \2/    \  2  /                     
$$\frac{\left(\cos{\left(x \right)} + 1\right) \left(\cos{\left(y \right)} + 1\right) \left(\cos{\left(x + y \right)} + 1\right) \sin{\left(\frac{x}{2} \right)} \sin{\left(\frac{y}{2} \right)} \sin{\left(\frac{x + y}{2} \right)}}{\cos{\left(\frac{x}{2} \right)} \cos{\left(\frac{y}{2} \right)} \cos{\left(\frac{x + y}{2} \right)}}$$
                   /   /x\      /y\\    /x\    /y\    /x\    /y\
4*(1 + cos(x + y))*|tan|-| + tan|-||*cos|-|*cos|-|*sin|-|*sin|-|
                   \   \2/      \2//    \2/    \2/    \2/    \2/
----------------------------------------------------------------
                              /x\    /y\                        
                       1 - tan|-|*tan|-|                        
                              \2/    \2/                        
$$\frac{4 \left(\cos{\left(x + y \right)} + 1\right) \left(\tan{\left(\frac{x}{2} \right)} + \tan{\left(\frac{y}{2} \right)}\right) \sin{\left(\frac{x}{2} \right)} \sin{\left(\frac{y}{2} \right)} \cos{\left(\frac{x}{2} \right)} \cos{\left(\frac{y}{2} \right)}}{- \tan{\left(\frac{x}{2} \right)} \tan{\left(\frac{y}{2} \right)} + 1}$$
/       2/x   pi\\ /       2/y   pi\\ /       2/x   y   pi\\                                           
|1 - cot |- + --||*|1 - cot |- + --||*|1 - cot |- + - + --||*(1 + sin(x))*(1 + sin(y))*(1 + sin(x + y))
\        \2   4 // \        \2   4 // \        \2   2   4 //                                           
-------------------------------------------------------------------------------------------------------
                                                   8                                                   
$$\frac{\left(- \cot^{2}{\left(\frac{x}{2} + \frac{\pi}{4} \right)} + 1\right) \left(- \cot^{2}{\left(\frac{y}{2} + \frac{\pi}{4} \right)} + 1\right) \left(- \cot^{2}{\left(\frac{x}{2} + \frac{y}{2} + \frac{\pi}{4} \right)} + 1\right) \left(\sin{\left(x \right)} + 1\right) \left(\sin{\left(y \right)} + 1\right) \left(\sin{\left(x + y \right)} + 1\right)}{8}$$
      2/x\    2/y\    2/x\    2/y\    2/x + y\
64*cos |-|*cos |-|*sin |-|*sin |-|*sin |-----|
       \2/     \2/     \2/     \2/     \  2  /
----------------------------------------------
 /         4/x + y\\                          
 |    4*sin |-----||                          
 |          \  2  /|                          
 |1 + -------------|*sin(x)*sin(y)*sin(x + y) 
 |        2        |                          
 \     sin (x + y) /                          
$$\frac{64 \sin^{2}{\left(\frac{x}{2} \right)} \sin^{2}{\left(\frac{y}{2} \right)} \sin^{2}{\left(\frac{x + y}{2} \right)} \cos^{2}{\left(\frac{x}{2} \right)} \cos^{2}{\left(\frac{y}{2} \right)}}{\left(\frac{4 \sin^{4}{\left(\frac{x + y}{2} \right)}}{\sin^{2}{\left(x + y \right)}} + 1\right) \sin{\left(x \right)} \sin{\left(y \right)} \sin{\left(x + y \right)}}$$
               2              2                                         
  /       2/x\\  /       2/y\\     4/x\    4/y\    /x\    /y\    /x   y\
8*|1 - tan |-|| *|1 - tan |-|| *cos |-|*cos |-|*tan|-|*tan|-|*tan|- + -|
  \        \4//  \        \4//      \4/     \4/    \2/    \2/    \2   2/
------------------------------------------------------------------------
                                   2/x   y\                             
                            1 + tan |- + -|                             
                                    \2   2/                             
$$\frac{8 \left(- \tan^{2}{\left(\frac{x}{4} \right)} + 1\right)^{2} \left(- \tan^{2}{\left(\frac{y}{4} \right)} + 1\right)^{2} \cos^{4}{\left(\frac{x}{4} \right)} \cos^{4}{\left(\frac{y}{4} \right)} \tan{\left(\frac{x}{2} \right)} \tan{\left(\frac{y}{2} \right)} \tan{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\tan^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)} + 1}$$
//  0     for x mod pi = 0\ //  0     for y mod pi = 0\ //    0       for (x + y) mod pi = 0\
|<                        |*|<                        |*|<                                  |
\\sin(x)     otherwise    / \\sin(y)     otherwise    / \\sin(x + y)        otherwise       /
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\sin{\left(x \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\sin{\left(y \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\sin{\left(x + y \right)} & \text{otherwise} \end{cases}\right)$$
//  0     for x mod pi = 0\ //  0     for y mod pi = 0\ //    0       for (x + y) mod pi = 0\
||                        | ||                        | ||                                  |
|<  1                     |*|<  1                     |*|<    1                             |
||------     otherwise    | ||------     otherwise    | ||----------        otherwise       |
\\csc(x)                  / \\csc(y)                  / \\csc(x + y)                        /
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\frac{1}{\csc{\left(x \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{1}{\csc{\left(y \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\frac{1}{\csc{\left(x + y \right)}} & \text{otherwise} \end{cases}\right)$$
      2/x\    2/y\    2/pi   x\    2/pi   y\    2/x   y\
64*sin |-|*sin |-|*sin |-- + -|*sin |-- + -|*sin |- + -|
       \2/     \2/     \2    2/     \2    2/     \2   2/
--------------------------------------------------------
      /         4/x   y\\                               
      |    4*sin |- + -||                               
      |          \2   2/|                               
      |1 + -------------|*sin(x)*sin(y)*sin(x + y)      
      |        2        |                               
      \     sin (x + y) /                               
$$\frac{64 \sin^{2}{\left(\frac{x}{2} \right)} \sin^{2}{\left(\frac{y}{2} \right)} \sin^{2}{\left(\frac{x}{2} + \frac{\pi}{2} \right)} \sin^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)} \sin^{2}{\left(\frac{y}{2} + \frac{\pi}{2} \right)}}{\left(\frac{4 \sin^{4}{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\sin^{2}{\left(x + y \right)}} + 1\right) \sin{\left(x \right)} \sin{\left(y \right)} \sin{\left(x + y \right)}}$$
//     0       for x mod pi = 0\ //     0       for y mod pi = 0\ //       0         for (x + y) mod pi = 0\
||                             | ||                             | ||                                       |
|<   /    pi\                  |*|<   /    pi\                  |*|<   /        pi\                        |
||cos|x - --|     otherwise    | ||cos|y - --|     otherwise    | ||cos|x + y - --|        otherwise       |
\\   \    2 /                  / \\   \    2 /                  / \\   \        2 /                        /
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\cos{\left(x - \frac{\pi}{2} \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\cos{\left(y - \frac{\pi}{2} \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\cos{\left(x + y - \frac{\pi}{2} \right)} & \text{otherwise} \end{cases}\right)$$
     /x\    /y\    /x   pi\    /y   pi\    /x   y   pi\
8*cos|-|*cos|-|*cos|- - --|*cos|- - --|*cos|- + - - --|
     \2/    \2/    \2   2 /    \2   2 /    \2   2   2 /
-------------------------------------------------------
           /       2/x   y   pi\\                      
           |    cos |- + - - --||                      
           |        \2   2   2 /|    /x   y\           
           |1 + ----------------|*cos|- + -|           
           |         2/x   y\   |    \2   2/           
           |      cos |- + -|   |                      
           \          \2   2/   /                      
$$\frac{8 \cos{\left(\frac{x}{2} \right)} \cos{\left(\frac{y}{2} \right)} \cos{\left(\frac{x}{2} - \frac{\pi}{2} \right)} \cos{\left(\frac{y}{2} - \frac{\pi}{2} \right)} \cos{\left(\frac{x}{2} + \frac{y}{2} - \frac{\pi}{2} \right)}}{\left(1 + \frac{\cos^{2}{\left(\frac{x}{2} + \frac{y}{2} - \frac{\pi}{2} \right)}}{\cos^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)}}\right) \cos{\left(\frac{x}{2} + \frac{y}{2} \right)}}$$
               2              2                         
  /       2/x\\  /       2/y\\     /x\    /y\    /x   y\
8*|1 - tan |-|| *|1 - tan |-|| *tan|-|*tan|-|*tan|- + -|
  \        \4//  \        \4//     \2/    \2/    \2   2/
--------------------------------------------------------
                 2              2                       
    /       2/x\\  /       2/y\\  /       2/x   y\\     
    |1 + tan |-|| *|1 + tan |-|| *|1 + tan |- + -||     
    \        \4//  \        \4//  \        \2   2//     
$$\frac{8 \left(- \tan^{2}{\left(\frac{x}{4} \right)} + 1\right)^{2} \left(- \tan^{2}{\left(\frac{y}{4} \right)} + 1\right)^{2} \tan{\left(\frac{x}{2} \right)} \tan{\left(\frac{y}{2} \right)} \tan{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\left(\tan^{2}{\left(\frac{x}{4} \right)} + 1\right)^{2} \left(\tan^{2}{\left(\frac{y}{4} \right)} + 1\right)^{2} \left(\tan^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)} + 1\right)}$$
                                     /x   y\                                
                                8*sec|- + -|                                
                                     \2   2/                                
----------------------------------------------------------------------------
/         2/x   y\   \                                                      
|      sec |- + -|   |                                                      
|          \2   2/   |    /x\    /y\    /x   pi\    /y   pi\    /x   y   pi\
|1 + ----------------|*sec|-|*sec|-|*sec|- - --|*sec|- - --|*sec|- + - - --|
|       2/x   y   pi\|    \2/    \2/    \2   2 /    \2   2 /    \2   2   2 /
|    sec |- + - - --||                                                      
\        \2   2   2 //                                                      
$$\frac{8 \sec{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\left(\frac{\sec^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\sec^{2}{\left(\frac{x}{2} + \frac{y}{2} - \frac{\pi}{2} \right)}} + 1\right) \sec{\left(\frac{x}{2} \right)} \sec{\left(\frac{y}{2} \right)} \sec{\left(\frac{x}{2} - \frac{\pi}{2} \right)} \sec{\left(\frac{y}{2} - \frac{\pi}{2} \right)} \sec{\left(\frac{x}{2} + \frac{y}{2} - \frac{\pi}{2} \right)}}$$
                                                        //      0         for (x + y) mod pi = 0\
                                                        ||                                      |
//  0     for x mod pi = 0\ //  0     for y mod pi = 0\ ||1 - cos(x + y)                        |
|<                        |*|<                        |*|<--------------        otherwise       |
\\sin(x)     otherwise    / \\sin(y)     otherwise    / ||     /x   y\                          |
                                                        ||  tan|- + -|                          |
                                                        \\     \2   2/                          /
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\sin{\left(x \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\sin{\left(y \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\frac{- \cos{\left(x + y \right)} + 1}{\tan{\left(\frac{x}{2} + \frac{y}{2} \right)}} & \text{otherwise} \end{cases}\right)$$
                                /pi   x   y\                           
                           8*csc|-- - - - -|                           
                                \2    2   2/                           
-----------------------------------------------------------------------
/       2/pi   x   y\\                                                 
|    csc |-- - - - -||                                                 
|        \2    2   2/|    /x\    /y\    /pi   x\    /pi   y\    /x   y\
|1 + ----------------|*csc|-|*csc|-|*csc|-- - -|*csc|-- - -|*csc|- + -|
|         2/x   y\   |    \2/    \2/    \2    2/    \2    2/    \2   2/
|      csc |- + -|   |                                                 
\          \2   2/   /                                                 
$$\frac{8 \csc{\left(- \frac{x}{2} - \frac{y}{2} + \frac{\pi}{2} \right)}}{\left(1 + \frac{\csc^{2}{\left(- \frac{x}{2} - \frac{y}{2} + \frac{\pi}{2} \right)}}{\csc^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)}}\right) \csc{\left(\frac{x}{2} \right)} \csc{\left(\frac{y}{2} \right)} \csc{\left(- \frac{x}{2} + \frac{\pi}{2} \right)} \csc{\left(\frac{x}{2} + \frac{y}{2} \right)} \csc{\left(- \frac{y}{2} + \frac{\pi}{2} \right)}}$$
//     0       for x mod pi = 0\ //     0       for y mod pi = 0\ //       0         for (x + y) mod pi = 0\
||                             | ||                             | ||                                       |
||     1                       | ||     1                       | ||       1                               |
|<-----------     otherwise    |*|<-----------     otherwise    |*|<---------------        otherwise       |
||   /    pi\                  | ||   /    pi\                  | ||   /        pi\                        |
||sec|x - --|                  | ||sec|y - --|                  | ||sec|x + y - --|                        |
\\   \    2 /                  / \\   \    2 /                  / \\   \        2 /                        /
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\frac{1}{\sec{\left(x - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{1}{\sec{\left(y - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\frac{1}{\sec{\left(x + y - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right)$$
/        2/x   pi\\ /        2/y   pi\\ /        2/x   y   pi\\
|-1 + tan |- + --||*|-1 + tan |- + --||*|-1 + tan |- + - + --||
\         \2   4 // \         \2   4 // \         \2   2   4 //
---------------------------------------------------------------
  /       2/x   pi\\ /       2/y   pi\\ /       2/x   y   pi\\ 
  |1 + tan |- + --||*|1 + tan |- + --||*|1 + tan |- + - + --|| 
  \        \2   4 // \        \2   4 // \        \2   2   4 // 
$$\frac{\left(\tan^{2}{\left(\frac{x}{2} + \frac{\pi}{4} \right)} - 1\right) \left(\tan^{2}{\left(\frac{y}{2} + \frac{\pi}{4} \right)} - 1\right) \left(\tan^{2}{\left(\frac{x}{2} + \frac{y}{2} + \frac{\pi}{4} \right)} - 1\right)}{\left(\tan^{2}{\left(\frac{x}{2} + \frac{\pi}{4} \right)} + 1\right) \left(\tan^{2}{\left(\frac{y}{2} + \frac{\pi}{4} \right)} + 1\right) \left(\tan^{2}{\left(\frac{x}{2} + \frac{y}{2} + \frac{\pi}{4} \right)} + 1\right)}$$
                                                        //       0         for (x + y) mod pi = 0\
                                                        ||                                       |
                                                        ||       /x   y\                         |
//  0     for x mod pi = 0\ //  0     for y mod pi = 0\ ||  2*tan|- + -|                         |
|<                        |*|<                        |*|<       \2   2/                         |
\\sin(x)     otherwise    / \\sin(y)     otherwise    / ||---------------        otherwise       |
                                                        ||       2/x   y\                        |
                                                        ||1 + tan |- + -|                        |
                                                        \\        \2   2/                        /
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\sin{\left(x \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\sin{\left(y \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\frac{2 \tan{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\tan^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)} + 1} & \text{otherwise} \end{cases}\right)$$
  //                x             \ //                y             \                         
  ||    1       for - mod 2*pi = 0| ||    1       for - mod 2*pi = 0|                         
  ||                2             | ||                2             |    /x\    /y\    /x   y\
8*|<                              |*|<                              |*tan|-|*tan|-|*tan|- + -|
  ||1 + cos(x)                    | ||1 + cos(y)                    |    \2/    \2/    \2   2/
  ||----------      otherwise     | ||----------      otherwise     |                         
  \\    2                         / \\    2                         /                         
----------------------------------------------------------------------------------------------
                                              2/x   y\                                        
                                       1 + tan |- + -|                                        
                                               \2   2/                                        
$$\frac{8 \left(\begin{cases} 1 & \text{for}\: \frac{x}{2} \bmod 2 \pi = 0 \\\frac{\cos{\left(x \right)} + 1}{2} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: \frac{y}{2} \bmod 2 \pi = 0 \\\frac{\cos{\left(y \right)} + 1}{2} & \text{otherwise} \end{cases}\right) \tan{\left(\frac{x}{2} \right)} \tan{\left(\frac{y}{2} \right)} \tan{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\tan^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)} + 1}$$
/       2/x   pi\\ /       2/y   pi\\ /       2/x   y   pi\\
|1 - cot |- + --||*|1 - cot |- + --||*|1 - cot |- + - + --||
\        \2   4 // \        \2   4 // \        \2   2   4 //
------------------------------------------------------------
/       2/x   pi\\ /       2/y   pi\\ /       2/x   y   pi\\
|1 + cot |- + --||*|1 + cot |- + --||*|1 + cot |- + - + --||
\        \2   4 // \        \2   4 // \        \2   2   4 //
$$\frac{\left(- \cot^{2}{\left(\frac{x}{2} + \frac{\pi}{4} \right)} + 1\right) \left(- \cot^{2}{\left(\frac{y}{2} + \frac{\pi}{4} \right)} + 1\right) \left(- \cot^{2}{\left(\frac{x}{2} + \frac{y}{2} + \frac{\pi}{4} \right)} + 1\right)}{\left(\cot^{2}{\left(\frac{x}{2} + \frac{\pi}{4} \right)} + 1\right) \left(\cot^{2}{\left(\frac{y}{2} + \frac{\pi}{4} \right)} + 1\right) \left(\cot^{2}{\left(\frac{x}{2} + \frac{y}{2} + \frac{\pi}{4} \right)} + 1\right)}$$
                             2/x\    2/y\    2/x + y\                       
                       64*sin |-|*sin |-|*sin |-----|                       
                              \2/     \2/     \  2  /                       
----------------------------------------------------------------------------
/         4/x\\ /         4/y\\ /         4/x + y\\                         
|    4*sin |-|| |    4*sin |-|| |    4*sin |-----||                         
|          \2/| |          \2/| |          \  2  /|                         
|1 + ---------|*|1 + ---------|*|1 + -------------|*sin(x)*sin(y)*sin(x + y)
|        2    | |        2    | |        2        |                         
\     sin (x) / \     sin (y) / \     sin (x + y) /                         
$$\frac{64 \sin^{2}{\left(\frac{x}{2} \right)} \sin^{2}{\left(\frac{y}{2} \right)} \sin^{2}{\left(\frac{x + y}{2} \right)}}{\left(\frac{4 \sin^{4}{\left(\frac{x}{2} \right)}}{\sin^{2}{\left(x \right)}} + 1\right) \left(\frac{4 \sin^{4}{\left(\frac{y}{2} \right)}}{\sin^{2}{\left(y \right)}} + 1\right) \left(\frac{4 \sin^{4}{\left(\frac{x + y}{2} \right)}}{\sin^{2}{\left(x + y \right)}} + 1\right) \sin{\left(x \right)} \sin{\left(y \right)} \sin{\left(x + y \right)}}$$
                                                        //             0                for (x + y) mod pi = 0\
                                                        ||                                                    |
                                                        ||             2                                      |
//  0     for x mod pi = 0\ //  0     for y mod pi = 0\ ||----------------------------        otherwise       |
|<                        |*|<                        |*|
            
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\sin{\left(x \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\sin{\left(y \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\frac{2}{\left(1 + \frac{1}{\tan^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)}}\right) \tan{\left(\frac{x}{2} + \frac{y}{2} \right)}} & \text{otherwise} \end{cases}\right)$$
                             2/x\    2/y\    2/x   y\                       
                       64*sin |-|*sin |-|*sin |- + -|                       
                              \2/     \2/     \2   2/                       
----------------------------------------------------------------------------
/         4/x\\ /         4/y\\ /         4/x   y\\                         
|    4*sin |-|| |    4*sin |-|| |    4*sin |- + -||                         
|          \2/| |          \2/| |          \2   2/|                         
|1 + ---------|*|1 + ---------|*|1 + -------------|*sin(x)*sin(y)*sin(x + y)
|        2    | |        2    | |        2        |                         
\     sin (x) / \     sin (y) / \     sin (x + y) /                         
$$\frac{64 \sin^{2}{\left(\frac{x}{2} \right)} \sin^{2}{\left(\frac{y}{2} \right)} \sin^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\left(\frac{4 \sin^{4}{\left(\frac{x}{2} \right)}}{\sin^{2}{\left(x \right)}} + 1\right) \left(\frac{4 \sin^{4}{\left(\frac{y}{2} \right)}}{\sin^{2}{\left(y \right)}} + 1\right) \left(\frac{4 \sin^{4}{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\sin^{2}{\left(x + y \right)}} + 1\right) \sin{\left(x \right)} \sin{\left(y \right)} \sin{\left(x + y \right)}}$$
//    0       for x mod pi = 0\ //    0       for y mod pi = 0\ //      0         for (x + y) mod pi = 0\
||                            | ||                            | ||                                      |
||1 - cos(x)                  | ||1 - cos(y)                  | ||1 - cos(x + y)                        |
|<----------     otherwise    |*|<----------     otherwise    |*|<--------------        otherwise       |
||     /x\                    | ||     /y\                    | ||     /x   y\                          |
||  tan|-|                    | ||  tan|-|                    | ||  tan|- + -|                          |
\\     \2/                    / \\     \2/                    / \\     \2   2/                          /
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\frac{- \cos{\left(x \right)} + 1}{\tan{\left(\frac{x}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{- \cos{\left(y \right)} + 1}{\tan{\left(\frac{y}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\frac{- \cos{\left(x + y \right)} + 1}{\tan{\left(\frac{x}{2} + \frac{y}{2} \right)}} & \text{otherwise} \end{cases}\right)$$
//     0       for x mod pi = 0\ //     0       for y mod pi = 0\ //       0         for (x + y) mod pi = 0\
||                             | ||                             | ||                                       |
||       /x\                   | ||       /y\                   | ||       /x   y\                         |
||  2*tan|-|                   | ||  2*tan|-|                   | ||  2*tan|- + -|                         |
|<       \2/                   |*|<       \2/                   |*|<       \2   2/                         |
||-----------     otherwise    | ||-----------     otherwise    | ||---------------        otherwise       |
||       2/x\                  | ||       2/y\                  | ||       2/x   y\                        |
||1 + tan |-|                  | ||1 + tan |-|                  | ||1 + tan |- + -|                        |
\\        \2/                  / \\        \2/                  / \\        \2   2/                        /
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\frac{2 \tan{\left(\frac{x}{2} \right)}}{\tan^{2}{\left(\frac{x}{2} \right)} + 1} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{2 \tan{\left(\frac{y}{2} \right)}}{\tan^{2}{\left(\frac{y}{2} \right)} + 1} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\frac{2 \tan{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\tan^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)} + 1} & \text{otherwise} \end{cases}\right)$$
//     0       for x mod pi = 0\ //     0       for y mod pi = 0\ //       0         for (x + y) mod pi = 0\
||                             | ||                             | ||                                       |
||       /x\                   | ||       /y\                   | ||       /x   y\                         |
||  2*cot|-|                   | ||  2*cot|-|                   | ||  2*cot|- + -|                         |
|<       \2/                   |*|<       \2/                   |*|<       \2   2/                         |
||-----------     otherwise    | ||-----------     otherwise    | ||---------------        otherwise       |
||       2/x\                  | ||       2/y\                  | ||       2/x   y\                        |
||1 + cot |-|                  | ||1 + cot |-|                  | ||1 + cot |- + -|                        |
\\        \2/                  / \\        \2/                  / \\        \2   2/                        /
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\frac{2 \cot{\left(\frac{x}{2} \right)}}{\cot^{2}{\left(\frac{x}{2} \right)} + 1} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{2 \cot{\left(\frac{y}{2} \right)}}{\cot^{2}{\left(\frac{y}{2} \right)} + 1} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\frac{2 \cot{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\cot^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)} + 1} & \text{otherwise} \end{cases}\right)$$
                                                                              //                           /        3*pi\             \
                                                                              ||          1            for |x + y + ----| mod 2*pi = 0|
                                                                              ||                           \         2  /             |
//            /    3*pi\             \ //            /    3*pi\             \ ||                                                      |
||  1     for |x + ----| mod 2*pi = 0| ||  1     for |y + ----| mod 2*pi = 0| ||        2/x   y   pi\                                 |
|<            \     2  /             |*|<            \     2  /             |*|<-1 + tan |- + - + --|                                 |
||                                   | ||                                   | ||         \2   2   4 /                                 |
\\sin(x)           otherwise         / \\sin(y)           otherwise         / ||---------------------             otherwise           |
                                                                              ||        2/x   y   pi\                                 |
                                                                              || 1 + tan |- + - + --|                                 |
                                                                              \\         \2   2   4 /                                 /
$$\left(\begin{cases} 1 & \text{for}\: \left(x + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\sin{\left(x \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: \left(y + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\sin{\left(y \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: \left(x + y + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\frac{\tan^{2}{\left(\frac{x}{2} + \frac{y}{2} + \frac{\pi}{4} \right)} - 1}{\tan^{2}{\left(\frac{x}{2} + \frac{y}{2} + \frac{\pi}{4} \right)} + 1} & \text{otherwise} \end{cases}\right)$$
//            0              for x mod pi = 0\ //            0              for y mod pi = 0\ //                 0                   for (x + y) mod pi = 0\
||                                           | ||                                           | ||                                                           |
|
            
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\sin{\left(x \right)} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\sin{\left(y \right)} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\sin{\left(x + y \right)} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right)$$
//         0            for x mod pi = 0\ //         0            for y mod pi = 0\ //             0                for (x + y) mod pi = 0\
||                                      | ||                                      | ||                                                    |
||         2                            | ||         2                            | ||             2                                      |
||--------------------     otherwise    | ||--------------------     otherwise    | ||----------------------------        otherwise       |
|
            
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\frac{2}{\left(1 + \frac{1}{\tan^{2}{\left(\frac{x}{2} \right)}}\right) \tan{\left(\frac{x}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{2}{\left(1 + \frac{1}{\tan^{2}{\left(\frac{y}{2} \right)}}\right) \tan{\left(\frac{y}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\frac{2}{\left(1 + \frac{1}{\tan^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)}}\right) \tan{\left(\frac{x}{2} + \frac{y}{2} \right)}} & \text{otherwise} \end{cases}\right)$$
                           /x   pi\    /y   pi\    /x   y   pi\                      
                      8*cos|- - --|*cos|- - --|*cos|- + - - --|                      
                           \2   2 /    \2   2 /    \2   2   2 /                      
-------------------------------------------------------------------------------------
/       2/x   pi\\ /       2/y   pi\\ /       2/x   y   pi\\                         
|    cos |- - --|| |    cos |- - --|| |    cos |- + - - --||                         
|        \2   2 /| |        \2   2 /| |        \2   2   2 /|    /x\    /y\    /x   y\
|1 + ------------|*|1 + ------------|*|1 + ----------------|*cos|-|*cos|-|*cos|- + -|
|         2/x\   | |         2/y\   | |         2/x   y\   |    \2/    \2/    \2   2/
|      cos |-|   | |      cos |-|   | |      cos |- + -|   |                         
\          \2/   / \          \2/   / \          \2   2/   /                         
$$\frac{8 \cos{\left(\frac{x}{2} - \frac{\pi}{2} \right)} \cos{\left(\frac{y}{2} - \frac{\pi}{2} \right)} \cos{\left(\frac{x}{2} + \frac{y}{2} - \frac{\pi}{2} \right)}}{\left(1 + \frac{\cos^{2}{\left(\frac{x}{2} - \frac{\pi}{2} \right)}}{\cos^{2}{\left(\frac{x}{2} \right)}}\right) \left(1 + \frac{\cos^{2}{\left(\frac{y}{2} - \frac{\pi}{2} \right)}}{\cos^{2}{\left(\frac{y}{2} \right)}}\right) \left(1 + \frac{\cos^{2}{\left(\frac{x}{2} + \frac{y}{2} - \frac{\pi}{2} \right)}}{\cos^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)}}\right) \cos{\left(\frac{x}{2} \right)} \cos{\left(\frac{y}{2} \right)} \cos{\left(\frac{x}{2} + \frac{y}{2} \right)}}$$
                                          /x\    /y\    /x   y\                                     
                                     8*sec|-|*sec|-|*sec|- + -|                                     
                                          \2/    \2/    \2   2/                                     
----------------------------------------------------------------------------------------------------
/         2/x\   \ /         2/y\   \ /         2/x   y\   \                                        
|      sec |-|   | |      sec |-|   | |      sec |- + -|   |                                        
|          \2/   | |          \2/   | |          \2   2/   |    /x   pi\    /y   pi\    /x   y   pi\
|1 + ------------|*|1 + ------------|*|1 + ----------------|*sec|- - --|*sec|- - --|*sec|- + - - --|
|       2/x   pi\| |       2/y   pi\| |       2/x   y   pi\|    \2   2 /    \2   2 /    \2   2   2 /
|    sec |- - --|| |    sec |- - --|| |    sec |- + - - --||                                        
\        \2   2 // \        \2   2 // \        \2   2   2 //                                        
$$\frac{8 \sec{\left(\frac{x}{2} \right)} \sec{\left(\frac{y}{2} \right)} \sec{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\left(\frac{\sec^{2}{\left(\frac{x}{2} \right)}}{\sec^{2}{\left(\frac{x}{2} - \frac{\pi}{2} \right)}} + 1\right) \left(\frac{\sec^{2}{\left(\frac{y}{2} \right)}}{\sec^{2}{\left(\frac{y}{2} - \frac{\pi}{2} \right)}} + 1\right) \left(\frac{\sec^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\sec^{2}{\left(\frac{x}{2} + \frac{y}{2} - \frac{\pi}{2} \right)}} + 1\right) \sec{\left(\frac{x}{2} - \frac{\pi}{2} \right)} \sec{\left(\frac{y}{2} - \frac{\pi}{2} \right)} \sec{\left(\frac{x}{2} + \frac{y}{2} - \frac{\pi}{2} \right)}}$$
  //                     x             \ //                     y             \
  ||       1         for - mod 2*pi = 0| ||       1         for - mod 2*pi = 0|
  ||                     2             | ||                     2             |
  ||                                   | ||                                   |
  ||              2                    | ||              2                    |
  ||/        2/x\\                     | ||/        2/y\\                     |
8*|<|-1 + cot |-||                     |*|<|-1 + cot |-||                     |
  ||\         \4//                     | ||\         \4//                     |
  ||---------------      otherwise     | ||---------------      otherwise     |
  ||              2                    | ||              2                    |
  || /       2/x\\                     | || /       2/y\\                     |
  || |1 + cot |-||                     | || |1 + cot |-||                     |
  \\ \        \4//                     / \\ \        \4//                     /
-------------------------------------------------------------------------------
                   /         1     \    /x\    /y\    /x   y\                  
                   |1 + -----------|*cot|-|*cot|-|*cot|- + -|                  
                   |       2/x   y\|    \2/    \2/    \2   2/                  
                   |    cot |- + -||                                           
                   \        \2   2//                                           
$$\frac{8 \left(\begin{cases} 1 & \text{for}\: \frac{x}{2} \bmod 2 \pi = 0 \\\frac{\left(\cot^{2}{\left(\frac{x}{4} \right)} - 1\right)^{2}}{\left(\cot^{2}{\left(\frac{x}{4} \right)} + 1\right)^{2}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: \frac{y}{2} \bmod 2 \pi = 0 \\\frac{\left(\cot^{2}{\left(\frac{y}{4} \right)} - 1\right)^{2}}{\left(\cot^{2}{\left(\frac{y}{4} \right)} + 1\right)^{2}} & \text{otherwise} \end{cases}\right)}{\left(1 + \frac{1}{\cot^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)}}\right) \cot{\left(\frac{x}{2} \right)} \cot{\left(\frac{y}{2} \right)} \cot{\left(\frac{x}{2} + \frac{y}{2} \right)}}$$
                           /pi   x\    /pi   y\    /pi   x   y\                      
                      8*csc|-- - -|*csc|-- - -|*csc|-- - - - -|                      
                           \2    2/    \2    2/    \2    2   2/                      
-------------------------------------------------------------------------------------
/       2/pi   x\\ /       2/pi   y\\ /       2/pi   x   y\\                         
|    csc |-- - -|| |    csc |-- - -|| |    csc |-- - - - -||                         
|        \2    2/| |        \2    2/| |        \2    2   2/|    /x\    /y\    /x   y\
|1 + ------------|*|1 + ------------|*|1 + ----------------|*csc|-|*csc|-|*csc|- + -|
|         2/x\   | |         2/y\   | |         2/x   y\   |    \2/    \2/    \2   2/
|      csc |-|   | |      csc |-|   | |      csc |- + -|   |                         
\          \2/   / \          \2/   / \          \2   2/   /                         
$$\frac{8 \csc{\left(- \frac{x}{2} + \frac{\pi}{2} \right)} \csc{\left(- \frac{y}{2} + \frac{\pi}{2} \right)} \csc{\left(- \frac{x}{2} - \frac{y}{2} + \frac{\pi}{2} \right)}}{\left(1 + \frac{\csc^{2}{\left(- \frac{x}{2} + \frac{\pi}{2} \right)}}{\csc^{2}{\left(\frac{x}{2} \right)}}\right) \left(1 + \frac{\csc^{2}{\left(- \frac{y}{2} + \frac{\pi}{2} \right)}}{\csc^{2}{\left(\frac{y}{2} \right)}}\right) \left(1 + \frac{\csc^{2}{\left(- \frac{x}{2} - \frac{y}{2} + \frac{\pi}{2} \right)}}{\csc^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)}}\right) \csc{\left(\frac{x}{2} \right)} \csc{\left(\frac{y}{2} \right)} \csc{\left(\frac{x}{2} + \frac{y}{2} \right)}}$$
//                       /    3*pi\             \ //                       /    3*pi\             \ //                           /        3*pi\             \
||        1          for |x + ----| mod 2*pi = 0| ||        1          for |y + ----| mod 2*pi = 0| ||          1            for |x + y + ----| mod 2*pi = 0|
||                       \     2  /             | ||                       \     2  /             | ||                           \         2  /             |
||                                              | ||                                              | ||                                                      |
||        2/x   pi\                             | ||        2/y   pi\                             | ||        2/x   y   pi\                                 |
|<-1 + tan |- + --|                             |*|<-1 + tan |- + --|                             |*|<-1 + tan |- + - + --|                                 |
||         \2   4 /                             | ||         \2   4 /                             | ||         \2   2   4 /                                 |
||-----------------           otherwise         | ||-----------------           otherwise         | ||---------------------             otherwise           |
||        2/x   pi\                             | ||        2/y   pi\                             | ||        2/x   y   pi\                                 |
|| 1 + tan |- + --|                             | || 1 + tan |- + --|                             | || 1 + tan |- + - + --|                                 |
\\         \2   4 /                             / \\         \2   4 /                             / \\         \2   2   4 /                                 /
$$\left(\begin{cases} 1 & \text{for}\: \left(x + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\frac{\tan^{2}{\left(\frac{x}{2} + \frac{\pi}{4} \right)} - 1}{\tan^{2}{\left(\frac{x}{2} + \frac{\pi}{4} \right)} + 1} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: \left(y + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\frac{\tan^{2}{\left(\frac{y}{2} + \frac{\pi}{4} \right)} - 1}{\tan^{2}{\left(\frac{y}{2} + \frac{\pi}{4} \right)} + 1} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: \left(x + y + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\frac{\tan^{2}{\left(\frac{x}{2} + \frac{y}{2} + \frac{\pi}{4} \right)} - 1}{\tan^{2}{\left(\frac{x}{2} + \frac{y}{2} + \frac{\pi}{4} \right)} + 1} & \text{otherwise} \end{cases}\right)$$
//           0             for x mod pi = 0\ //           0             for y mod pi = 0\ //               0                 for (x + y) mod pi = 0\
||                                         | ||                                         | ||                                                       |
||         sin(x)                          | ||         sin(y)                          | ||           sin(x + y)                                  |
||-----------------------     otherwise    | ||-----------------------     otherwise    | ||-------------------------------        otherwise       |
||/        2    \                          | ||/        2    \                          | ||/        2        \                                    |
|<|     sin (x) |    2/x\                  |*|<|     sin (y) |    2/y\                  |*|<|     sin (x + y) |    2/x   y\                        |
|||1 + ---------|*sin |-|                  | |||1 + ---------|*sin |-|                  | |||1 + -------------|*sin |- + -|                        |
|||         4/x\|     \2/                  | |||         4/y\|     \2/                  | |||         4/x   y\|     \2   2/                        |
|||    4*sin |-||                          | |||    4*sin |-||                          | |||    4*sin |- + -||                                    |
||\          \2//                          | ||\          \2//                          | ||\          \2   2//                                    |
\\                                         / \\                                         / \\                                                       /
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\frac{\sin{\left(x \right)}}{\left(1 + \frac{\sin^{2}{\left(x \right)}}{4 \sin^{4}{\left(\frac{x}{2} \right)}}\right) \sin^{2}{\left(\frac{x}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{\sin{\left(y \right)}}{\left(1 + \frac{\sin^{2}{\left(y \right)}}{4 \sin^{4}{\left(\frac{y}{2} \right)}}\right) \sin^{2}{\left(\frac{y}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\frac{\sin{\left(x + y \right)}}{\left(1 + \frac{\sin^{2}{\left(x + y \right)}}{4 \sin^{4}{\left(\frac{x}{2} + \frac{y}{2} \right)}}\right) \sin^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)}} & \text{otherwise} \end{cases}\right)$$
//             0                for x mod pi = 0\ //             0                for y mod pi = 0\ //                 0                    for (x + y) mod pi = 0\
||                                              | ||                                              | ||                                                            |
||          2*sin(x)                            | ||          2*sin(y)                            | ||            2*sin(x + y)                                    |
||----------------------------     otherwise    | ||----------------------------     otherwise    | ||------------------------------------        otherwise       |
||             /        2    \                  | ||             /        2    \                  | ||                 /        2        \                        |
|<             |     sin (x) |                  |*|<             |     sin (y) |                  |*|<                 |     sin (x + y) |                        |
||(1 - cos(x))*|1 + ---------|                  | ||(1 - cos(y))*|1 + ---------|                  | ||(1 - cos(x + y))*|1 + -------------|                        |
||             |         4/x\|                  | ||             |         4/y\|                  | ||                 |         4/x + y\|                        |
||             |    4*sin |-||                  | ||             |    4*sin |-||                  | ||                 |    4*sin |-----||                        |
||             \          \2//                  | ||             \          \2//                  | ||                 \          \  2  //                        |
\\                                              / \\                                              / \\                                                            /
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\frac{2 \sin{\left(x \right)}}{\left(1 + \frac{\sin^{2}{\left(x \right)}}{4 \sin^{4}{\left(\frac{x}{2} \right)}}\right) \left(- \cos{\left(x \right)} + 1\right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{2 \sin{\left(y \right)}}{\left(1 + \frac{\sin^{2}{\left(y \right)}}{4 \sin^{4}{\left(\frac{y}{2} \right)}}\right) \left(- \cos{\left(y \right)} + 1\right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\frac{2 \sin{\left(x + y \right)}}{\left(1 + \frac{\sin^{2}{\left(x + y \right)}}{4 \sin^{4}{\left(\frac{x + y}{2} \right)}}\right) \left(- \cos{\left(x + y \right)} + 1\right)} & \text{otherwise} \end{cases}\right)$$
//              0                 for x mod pi = 0\ //              0                 for y mod pi = 0\ //                   0                      for (x + y) mod pi = 0\
||                                                | ||                                                | ||                                                                |
||/     0       for x mod pi = 0                  | ||/     0       for y mod pi = 0                  | ||/       0         for (x + y) mod pi = 0                        |
|||                                               | |||                                               | |||                                                               |
|||       /x\                                     | |||       /y\                                     | |||       /x   y\                                                 |
|<|  2*cot|-|                                     |*|<|  2*cot|-|                                     |*|<|  2*cot|- + -|                                                 |
||<       \2/                        otherwise    | ||<       \2/                        otherwise    | ||<       \2   2/                                 otherwise       |
|||-----------     otherwise                      | |||-----------     otherwise                      | |||---------------        otherwise                               |
|||       2/x\                                    | |||       2/y\                                    | |||       2/x   y\                                                |
|||1 + cot |-|                                    | |||1 + cot |-|                                    | |||1 + cot |- + -|                                                |
\\\        \2/                                    / \\\        \2/                                    / \\\        \2   2/                                                /
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\frac{2 \cot{\left(\frac{x}{2} \right)}}{\cot^{2}{\left(\frac{x}{2} \right)} + 1} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{2 \cot{\left(\frac{y}{2} \right)}}{\cot^{2}{\left(\frac{y}{2} \right)} + 1} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\frac{2 \cot{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\cot^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)} + 1} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right)$$
//            0              for x mod pi = 0\ //            0              for y mod pi = 0\ //                0                  for (x + y) mod pi = 0\
||                                           | ||                                           | ||                                                         |
||           /x   pi\                        | ||           /y   pi\                        | ||             /x   y   pi\                                |
||      2*sec|- - --|                        | ||      2*sec|- - --|                        | ||        2*sec|- + - - --|                                |
||           \2   2 /                        | ||           \2   2 /                        | ||             \2   2   2 /                                |
||-------------------------     otherwise    | ||-------------------------     otherwise    | ||---------------------------------        otherwise       |
|
            
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\frac{2 \sec{\left(\frac{x}{2} - \frac{\pi}{2} \right)}}{\left(1 + \frac{\sec^{2}{\left(\frac{x}{2} - \frac{\pi}{2} \right)}}{\sec^{2}{\left(\frac{x}{2} \right)}}\right) \sec{\left(\frac{x}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{2 \sec{\left(\frac{y}{2} - \frac{\pi}{2} \right)}}{\left(1 + \frac{\sec^{2}{\left(\frac{y}{2} - \frac{\pi}{2} \right)}}{\sec^{2}{\left(\frac{y}{2} \right)}}\right) \sec{\left(\frac{y}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\frac{2 \sec{\left(\frac{x}{2} + \frac{y}{2} - \frac{\pi}{2} \right)}}{\left(1 + \frac{\sec^{2}{\left(\frac{x}{2} + \frac{y}{2} - \frac{\pi}{2} \right)}}{\sec^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)}}\right) \sec{\left(\frac{x}{2} + \frac{y}{2} \right)}} & \text{otherwise} \end{cases}\right)$$
//              0                 for x mod pi = 0\ //              0                 for y mod pi = 0\ //                  0                     for (x + y) mod pi = 0\
||                                                | ||                                                | ||                                                              |
||                /x\                             | ||                /y\                             | ||                  /x   y\                                     |
||           2*cos|-|                             | ||           2*cos|-|                             | ||             2*cos|- + -|                                     |
||                \2/                             | ||                \2/                             | ||                  \2   2/                                     |
||------------------------------     otherwise    | ||------------------------------     otherwise    | ||--------------------------------------        otherwise       |
|
            
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\frac{2 \cos{\left(\frac{x}{2} \right)}}{\left(\frac{\cos^{2}{\left(\frac{x}{2} \right)}}{\cos^{2}{\left(\frac{x}{2} - \frac{\pi}{2} \right)}} + 1\right) \cos{\left(\frac{x}{2} - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{2 \cos{\left(\frac{y}{2} \right)}}{\left(\frac{\cos^{2}{\left(\frac{y}{2} \right)}}{\cos^{2}{\left(\frac{y}{2} - \frac{\pi}{2} \right)}} + 1\right) \cos{\left(\frac{y}{2} - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\frac{2 \cos{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\left(\frac{\cos^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\cos^{2}{\left(\frac{x}{2} + \frac{y}{2} - \frac{\pi}{2} \right)}} + 1\right) \cos{\left(\frac{x}{2} + \frac{y}{2} - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right)$$
//              0                 for x mod pi = 0\ //              0                 for y mod pi = 0\ //                  0                     for (x + y) mod pi = 0\
||                                                | ||                                                | ||                                                              |
||                /x\                             | ||                /y\                             | ||                  /x   y\                                     |
||           2*csc|-|                             | ||           2*csc|-|                             | ||             2*csc|- + -|                                     |
||                \2/                             | ||                \2/                             | ||                  \2   2/                                     |
||------------------------------     otherwise    | ||------------------------------     otherwise    | ||--------------------------------------        otherwise       |
|
            
$$\left(\begin{cases} 0 & \text{for}\: x \bmod \pi = 0 \\\frac{2 \csc{\left(\frac{x}{2} \right)}}{\left(\frac{\csc^{2}{\left(\frac{x}{2} \right)}}{\csc^{2}{\left(- \frac{x}{2} + \frac{\pi}{2} \right)}} + 1\right) \csc{\left(- \frac{x}{2} + \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{2 \csc{\left(\frac{y}{2} \right)}}{\left(\frac{\csc^{2}{\left(\frac{y}{2} \right)}}{\csc^{2}{\left(- \frac{y}{2} + \frac{\pi}{2} \right)}} + 1\right) \csc{\left(- \frac{y}{2} + \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: \left(x + y\right) \bmod \pi = 0 \\\frac{2 \csc{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\left(\frac{\csc^{2}{\left(\frac{x}{2} + \frac{y}{2} \right)}}{\csc^{2}{\left(- \frac{x}{2} - \frac{y}{2} + \frac{\pi}{2} \right)}} + 1\right) \csc{\left(- \frac{x}{2} - \frac{y}{2} + \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right)$$
Piecewise((0, Mod(x = pi, 0)), (2*csc(x/2)/((1 + csc(x/2)^2/csc(pi/2 - x/2)^2)*csc(pi/2 - x/2)), True))*Piecewise((0, Mod(y = pi, 0)), (2*csc(y/2)/((1 + csc(y/2)^2/csc(pi/2 - y/2)^2)*csc(pi/2 - y/2)), True))*Piecewise((0, Mod(x + y = pi, 0)), (2*csc(x/2 + y/2)/((1 + csc(x/2 + y/2)^2/csc(pi/2 - x/2 - y/2)^2)*csc(pi/2 - x/2 - y/2)), True))
Степени [src]
  /   I*(-x - y)    I*(x + y)\ /   -I*x    I*x\ /   -I*y    I*y\
I*\- e           + e         /*\- e     + e   /*\- e     + e   /
----------------------------------------------------------------
                               8                                
$$\frac{i \left(e^{i x} - e^{- i x}\right) \left(e^{i y} - e^{- i y}\right) \left(- e^{i \left(- x - y\right)} + e^{i \left(x + y\right)}\right)}{8}$$
i*(-exp(i*(-x - y)) + exp(i*(x + y)))*(-exp(-i*x) + exp(i*x))*(-exp(-i*y) + exp(i*y))/8
Численный ответ [src]
sin(x)*sin(y)*sin(x + y)
sin(x)*sin(y)*sin(x + y)