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sin(pi-y) если y=-4

Выражение, которое надо упростить:

Решение

Вы ввели [src]
sin(pi - y)
$$\sin{\left(- y + \pi \right)}$$
sin(pi - y)
Общее упрощение [src]
sin(y)
$$\sin{\left(y \right)}$$
sin(y)
Подстановка условия [src]
sin(pi - y) при y = -4
подставляем
sin(pi - y)
$$\sin{\left(- y + \pi \right)}$$
sin(y)
$$\sin{\left(y \right)}$$
переменные
y = -4
$$y = -4$$
sin((-4))
$$\sin{\left((-4) \right)}$$
sin(-4)
$$\sin{\left(-4 \right)}$$
-sin(4)
$$- \sin{\left(4 \right)}$$
-sin(4)
Численный ответ [src]
sin(pi - y)
sin(pi - y)
Рациональный знаменатель [src]
sin(y)
$$\sin{\left(y \right)}$$
sin(y)
Комбинаторика [src]
sin(y)
$$\sin{\left(y \right)}$$
sin(y)
Общий знаменатель [src]
sin(y)
$$\sin{\left(y \right)}$$
sin(y)
Степени [src]
sin(y)
$$\sin{\left(y \right)}$$
   /   I*(y - pi)    I*(pi - y)\ 
-I*\- e           + e          / 
---------------------------------
                2                
$$- \frac{i \left(e^{i \left(- y + \pi\right)} - e^{i \left(y - \pi\right)}\right)}{2}$$
-i*(-exp(i*(y - pi)) + exp(i*(pi - y)))/2
Объединение рациональных выражений [src]
sin(y)
$$\sin{\left(y \right)}$$
sin(y)
Собрать выражение [src]
sin(y)
$$\sin{\left(y \right)}$$
sin(y)
Раскрыть выражение [src]
sin(y)
$$\sin{\left(y \right)}$$
sin(y)
Тригонометрическая часть [src]
sin(y)
$$\sin{\left(y \right)}$$
  1   
------
csc(y)
$$\frac{1}{\csc{\left(y \right)}}$$
   /    pi\
cos|y - --|
   \    2 /
$$\cos{\left(y - \frac{\pi}{2} \right)}$$
     1     
-----------
csc(pi - y)
$$\frac{1}{\csc{\left(- y + \pi \right)}}$$
     1     
-----------
   /    pi\
sec|y - --|
   \    2 /
$$\frac{1}{\sec{\left(y - \frac{\pi}{2} \right)}}$$
     1     
-----------
   /pi    \
sec|-- - y|
   \2     /
$$\frac{1}{\sec{\left(- y + \frac{\pi}{2} \right)}}$$
                /y\
(1 + cos(y))*tan|-|
                \2/
$$\left(\cos{\left(y \right)} + 1\right) \tan{\left(\frac{y}{2} \right)}$$
       /y\ 
  2*cot|-| 
       \2/ 
-----------
       2/y\
1 + cot |-|
        \2/
$$\frac{2 \cot{\left(\frac{y}{2} \right)}}{\cot^{2}{\left(\frac{y}{2} \right)} + 1}$$
       /y\ 
  2*tan|-| 
       \2/ 
-----------
       2/y\
1 + tan |-|
        \2/
$$\frac{2 \tan{\left(\frac{y}{2} \right)}}{\tan^{2}{\left(\frac{y}{2} \right)} + 1}$$
/  0     for y mod pi = 0
<                        
\sin(y)     otherwise    
$$\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\sin{\left(y \right)} & \text{otherwise} \end{cases}$$
         2          
--------------------
/       1   \    /y\
|1 + -------|*cot|-|
|       2/y\|    \2/
|    cot |-||       
\        \2//       
$$\frac{2}{\left(1 + \frac{1}{\cot^{2}{\left(\frac{y}{2} \right)}}\right) \cot{\left(\frac{y}{2} \right)}}$$
/  0     for y mod pi = 0
|                        
<  1                     
|------     otherwise    
\csc(y)                  
$$\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{1}{\csc{\left(y \right)}} & \text{otherwise} \end{cases}$$
/     0       for y mod pi = 0
|                             
<   /    pi\                  
|cos|y - --|     otherwise    
\   \    2 /                  
$$\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\cos{\left(y - \frac{\pi}{2} \right)} & \text{otherwise} \end{cases}$$
/       2/y   pi\\             
|1 - cot |- + --||*(1 + sin(y))
\        \2   4 //             
-------------------------------
               2               
$$\frac{\left(- \cot^{2}{\left(\frac{y}{2} + \frac{\pi}{4} \right)} + 1\right) \left(\sin{\left(y \right)} + 1\right)}{2}$$
        2/y   pi\
-1 + tan |- + --|
         \2   4 /
-----------------
        2/y   pi\
 1 + tan |- + --|
         \2   4 /
$$\frac{\tan^{2}{\left(\frac{y}{2} + \frac{\pi}{4} \right)} - 1}{\tan^{2}{\left(\frac{y}{2} + \frac{\pi}{4} \right)} + 1}$$
       2/y   pi\
1 - cot |- + --|
        \2   4 /
----------------
       2/y   pi\
1 + cot |- + --|
        \2   4 /
$$\frac{- \cot^{2}{\left(\frac{y}{2} + \frac{\pi}{4} \right)} + 1}{\cot^{2}{\left(\frac{y}{2} + \frac{\pi}{4} \right)} + 1}$$
/     0       for y mod pi = 0
|                             
|     1                       
<-----------     otherwise    
|   /    pi\                  
|sec|y - --|                  
\   \    2 /                  
$$\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{1}{\sec{\left(y - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}$$
       2/y\        
  4*sin |-|*sin(y) 
        \2/        
-------------------
   2           4/y\
sin (y) + 4*sin |-|
                \2/
$$\frac{4 \sin^{2}{\left(\frac{y}{2} \right)} \sin{\left(y \right)}}{4 \sin^{4}{\left(\frac{y}{2} \right)} + \sin^{2}{\left(y \right)}}$$
/            /    3*pi\             
|  1     for |y + ----| mod 2*pi = 0
<            \     2  /             
|                                   
\sin(y)           otherwise         
$$\begin{cases} 1 & \text{for}\: \left(y + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\sin{\left(y \right)} & \text{otherwise} \end{cases}$$
/    0       for y mod pi = 0
|                            
|1 - cos(y)                  
<----------     otherwise    
|     /y\                    
|  tan|-|                    
\     \2/                    
$$\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{- \cos{\left(y \right)} + 1}{\tan{\left(\frac{y}{2} \right)}} & \text{otherwise} \end{cases}$$
           2/y\       
      4*sin |-|       
            \2/       
----------------------
/         4/y\\       
|    4*sin |-||       
|          \2/|       
|1 + ---------|*sin(y)
|        2    |       
\     sin (y) /       
$$\frac{4 \sin^{2}{\left(\frac{y}{2} \right)}}{\left(\frac{4 \sin^{4}{\left(\frac{y}{2} \right)}}{\sin^{2}{\left(y \right)}} + 1\right) \sin{\left(y \right)}}$$
/     0       for y mod pi = 0
|                             
|       /y\                   
|  2*cot|-|                   
<       \2/                   
|-----------     otherwise    
|       2/y\                  
|1 + cot |-|                  
\        \2/                  
$$\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{2 \cot{\left(\frac{y}{2} \right)}}{\cot^{2}{\left(\frac{y}{2} \right)} + 1} & \text{otherwise} \end{cases}$$
/     0       for y mod pi = 0
|                             
|       /y\                   
|  2*tan|-|                   
<       \2/                   
|-----------     otherwise    
|       2/y\                  
|1 + tan |-|                  
\        \2/                  
$$\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{2 \tan{\left(\frac{y}{2} \right)}}{\tan^{2}{\left(\frac{y}{2} \right)} + 1} & \text{otherwise} \end{cases}$$
/            0              for y mod pi = 0
|                                           

            
$$\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\sin{\left(y \right)} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}$$
/         0            for y mod pi = 0
|                                      
|         2                            
|--------------------     otherwise    

            
$$\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{2}{\left(1 + \frac{1}{\tan^{2}{\left(\frac{y}{2} \right)}}\right) \tan{\left(\frac{y}{2} \right)}} & \text{otherwise} \end{cases}$$
           /y   pi\      
      2*cos|- - --|      
           \2   2 /      
-------------------------
/       2/y   pi\\       
|    cos |- - --||       
|        \2   2 /|    /y\
|1 + ------------|*cos|-|
|         2/y\   |    \2/
|      cos |-|   |       
\          \2/   /       
$$\frac{2 \cos{\left(\frac{y}{2} - \frac{\pi}{2} \right)}}{\left(1 + \frac{\cos^{2}{\left(\frac{y}{2} - \frac{\pi}{2} \right)}}{\cos^{2}{\left(\frac{y}{2} \right)}}\right) \cos{\left(\frac{y}{2} \right)}}$$
                /y\           
           2*sec|-|           
                \2/           
------------------------------
/         2/y\   \            
|      sec |-|   |            
|          \2/   |    /y   pi\
|1 + ------------|*sec|- - --|
|       2/y   pi\|    \2   2 /
|    sec |- - --||            
\        \2   2 //            
$$\frac{2 \sec{\left(\frac{y}{2} \right)}}{\left(\frac{\sec^{2}{\left(\frac{y}{2} \right)}}{\sec^{2}{\left(\frac{y}{2} - \frac{\pi}{2} \right)}} + 1\right) \sec{\left(\frac{y}{2} - \frac{\pi}{2} \right)}}$$
           /pi   y\      
      2*csc|-- - -|      
           \2    2/      
-------------------------
/       2/pi   y\\       
|    csc |-- - -||       
|        \2    2/|    /y\
|1 + ------------|*csc|-|
|         2/y\   |    \2/
|      csc |-|   |       
\          \2/   /       
$$\frac{2 \csc{\left(- \frac{y}{2} + \frac{\pi}{2} \right)}}{\left(1 + \frac{\csc^{2}{\left(- \frac{y}{2} + \frac{\pi}{2} \right)}}{\csc^{2}{\left(\frac{y}{2} \right)}}\right) \csc{\left(\frac{y}{2} \right)}}$$
/                       /    3*pi\             
|        1          for |y + ----| mod 2*pi = 0
|                       \     2  /             
|                                              
|        2/y   pi\                             
<-1 + tan |- + --|                             
|         \2   4 /                             
|-----------------           otherwise         
|        2/y   pi\                             
| 1 + tan |- + --|                             
\         \2   4 /                             
$$\begin{cases} 1 & \text{for}\: \left(y + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\frac{\tan^{2}{\left(\frac{y}{2} + \frac{\pi}{4} \right)} - 1}{\tan^{2}{\left(\frac{y}{2} + \frac{\pi}{4} \right)} + 1} & \text{otherwise} \end{cases}$$
/           0             for y mod pi = 0
|                                         
|         sin(y)                          
|-----------------------     otherwise    
|/        2    \                          
<|     sin (y) |    2/y\                  
||1 + ---------|*sin |-|                  
||         4/y\|     \2/                  
||    4*sin |-||                          
|\          \2//                          
\                                         
$$\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{\sin{\left(y \right)}}{\left(1 + \frac{\sin^{2}{\left(y \right)}}{4 \sin^{4}{\left(\frac{y}{2} \right)}}\right) \sin^{2}{\left(\frac{y}{2} \right)}} & \text{otherwise} \end{cases}$$
/             0                for y mod pi = 0
|                                              
|          2*sin(y)                            
|----------------------------     otherwise    
|             /        2    \                  
<             |     sin (y) |                  
|(1 - cos(y))*|1 + ---------|                  
|             |         4/y\|                  
|             |    4*sin |-||                  
|             \          \2//                  
\                                              
$$\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{2 \sin{\left(y \right)}}{\left(1 + \frac{\sin^{2}{\left(y \right)}}{4 \sin^{4}{\left(\frac{y}{2} \right)}}\right) \left(- \cos{\left(y \right)} + 1\right)} & \text{otherwise} \end{cases}$$
/              0                 for y mod pi = 0
|                                                
|/     0       for y mod pi = 0                  
||                                               
||       /y\                                     
<|  2*cot|-|                                     
|<       \2/                        otherwise    
||-----------     otherwise                      
||       2/y\                                    
||1 + cot |-|                                    
\\        \2/                                    
$$\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{2 \cot{\left(\frac{y}{2} \right)}}{\cot^{2}{\left(\frac{y}{2} \right)} + 1} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}$$
/            0              for y mod pi = 0
|                                           
|           /y   pi\                        
|      2*sec|- - --|                        
|           \2   2 /                        
|-------------------------     otherwise    

            
$$\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{2 \sec{\left(\frac{y}{2} - \frac{\pi}{2} \right)}}{\left(1 + \frac{\sec^{2}{\left(\frac{y}{2} - \frac{\pi}{2} \right)}}{\sec^{2}{\left(\frac{y}{2} \right)}}\right) \sec{\left(\frac{y}{2} \right)}} & \text{otherwise} \end{cases}$$
/              0                 for y mod pi = 0
|                                                
|                /y\                             
|           2*cos|-|                             
|                \2/                             
|------------------------------     otherwise    

            
$$\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{2 \cos{\left(\frac{y}{2} \right)}}{\left(\frac{\cos^{2}{\left(\frac{y}{2} \right)}}{\cos^{2}{\left(\frac{y}{2} - \frac{\pi}{2} \right)}} + 1\right) \cos{\left(\frac{y}{2} - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}$$
/              0                 for y mod pi = 0
|                                                
|                /y\                             
|           2*csc|-|                             
|                \2/                             
|------------------------------     otherwise    

            
$$\begin{cases} 0 & \text{for}\: y \bmod \pi = 0 \\\frac{2 \csc{\left(\frac{y}{2} \right)}}{\left(\frac{\csc^{2}{\left(\frac{y}{2} \right)}}{\csc^{2}{\left(- \frac{y}{2} + \frac{\pi}{2} \right)}} + 1\right) \csc{\left(- \frac{y}{2} + \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}$$
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))