Господин Экзамен

Другие калькуляторы

1/(cos(t)^2)-1 если t=1/3

Выражение, которое надо упростить:

Решение

Вы ввели [src]
     1       
1*------- - 1
     2       
  cos (t)    
$$\left(-1\right) 1 + 1 \cdot \frac{1}{\cos^{2}{\left(t \right)}}$$
1/cos(t)^2 - 1*1
Разложение дроби [src]
-1 + cos(t)^(-2)
$$-1 + \frac{1}{\cos^{2}{\left(t \right)}}$$
        1   
-1 + -------
        2   
     cos (t)
Общее упрощение [src]
   2   
tan (t)
$$\tan^{2}{\left(t \right)}$$
tan(t)^2
Подстановка условия [src]
1/cos(t)^2 - 1*1 при t = 1/3
подставляем
     1       
1*------- - 1
     2       
  cos (t)    
$$\left(-1\right) 1 + 1 \cdot \frac{1}{\cos^{2}{\left(t \right)}}$$
   2   
tan (t)
$$\tan^{2}{\left(t \right)}$$
переменные
t = 1/3
$$t = \frac{1}{3}$$
   2       
tan ((1/3))
$$\tan^{2}{\left((1/3) \right)}$$
   2     
tan (1/3)
$$\tan^{2}{\left(\frac{1}{3} \right)}$$
tan(1/3)^2
Собрать выражение [src]
        2   
-1 + sec (t)
$$\sec^{2}{\left(t \right)} - 1$$
        1   
-1 + -------
        2   
     cos (t)
$$-1 + \frac{1}{\cos^{2}{\left(t \right)}}$$
-1 + cos(t)^(-2)
Комбинаторика [src]
-(1 + cos(t))*(-1 + cos(t)) 
----------------------------
             2              
          cos (t)           
$$- \frac{\left(\cos{\left(t \right)} - 1\right) \left(\cos{\left(t \right)} + 1\right)}{\cos^{2}{\left(t \right)}}$$
-(1 + cos(t))*(-1 + cos(t))/cos(t)^2
Общий знаменатель [src]
        1   
-1 + -------
        2   
     cos (t)
$$-1 + \frac{1}{\cos^{2}{\left(t \right)}}$$
-1 + cos(t)^(-2)
Раскрыть выражение [src]
        1   
-1 + -------
        2   
     cos (t)
$$-1 + \frac{1}{\cos^{2}{\left(t \right)}}$$
-1 + cos(t)^(-2)
Объединение рациональных выражений [src]
       2   
1 - cos (t)
-----------
     2     
  cos (t)  
$$\frac{- \cos^{2}{\left(t \right)} + 1}{\cos^{2}{\left(t \right)}}$$
(1 - cos(t)^2)/cos(t)^2
Тригонометрическая часть [src]
   2   
tan (t)
$$\tan^{2}{\left(t \right)}$$
        2   
-1 + sec (t)
$$\sec^{2}{\left(t \right)} - 1$$
   1   
-------
   2   
cot (t)
$$\frac{1}{\cot^{2}{\left(t \right)}}$$
        1   
-1 + -------
        2   
     cos (t)
$$-1 + \frac{1}{\cos^{2}{\left(t \right)}}$$
        2/pi    \
-1 + csc |-- - t|
         \2     /
$$\csc^{2}{\left(- t + \frac{\pi}{2} \right)} - 1$$
          1      
-1 + ------------
        2/    pi\
     sin |t + --|
         \    2 /
$$-1 + \frac{1}{\sin^{2}{\left(t + \frac{\pi}{2} \right)}}$$
     4   
4*sin (t)
---------
   2     
sin (2*t)
$$\frac{4 \sin^{4}{\left(t \right)}}{\sin^{2}{\left(2 t \right)}}$$
1 - cos(2*t)
------------
1 + cos(2*t)
$$\frac{- \cos{\left(2 t \right)} + 1}{\cos{\left(2 t \right)} + 1}$$
     2      
  sec (t)   
------------
   2/    pi\
sec |t - --|
    \    2 /
$$\frac{\sec^{2}{\left(t \right)}}{\sec^{2}{\left(t - \frac{\pi}{2} \right)}}$$
   2/    pi\
cos |t - --|
    \    2 /
------------
     2      
  cos (t)   
$$\frac{\cos^{2}{\left(t - \frac{\pi}{2} \right)}}{\cos^{2}{\left(t \right)}}$$
   2/pi    \
csc |-- - t|
    \2     /
------------
     2      
  csc (t)   
$$\frac{\csc^{2}{\left(- t + \frac{\pi}{2} \right)}}{\csc^{2}{\left(t \right)}}$$
                   2
      /       2/t\\ 
      |1 + cot |-|| 
      \        \2// 
-1 + ---------------
                   2
     /        2/t\\ 
     |-1 + cot |-|| 
     \         \2// 
$$-1 + \frac{\left(\cot^{2}{\left(\frac{t}{2} \right)} + 1\right)^{2}}{\left(\cot^{2}{\left(\frac{t}{2} \right)} - 1\right)^{2}}$$
                  2
     /       2/t\\ 
     |1 + tan |-|| 
     \        \2// 
-1 + --------------
                  2
     /       2/t\\ 
     |1 - tan |-|| 
     \        \2// 
$$-1 + \frac{\left(\tan^{2}{\left(\frac{t}{2} \right)} + 1\right)^{2}}{\left(- \tan^{2}{\left(\frac{t}{2} \right)} + 1\right)^{2}}$$
     //   1     for t mod 2*pi = 0\
     ||                           |
     ||   1                       |
-1 + |<-------      otherwise     |
     ||   2                       |
     ||cos (t)                    |
     \\                           /
$$\left(\begin{cases} 1 & \text{for}\: t \bmod 2 \pi = 0 \\\frac{1}{\cos^{2}{\left(t \right)}} & \text{otherwise} \end{cases}\right) - 1$$
     //     1        for t mod 2*pi = 0\
     ||                                |
-1 + |<     2                          |
     ||------------      otherwise     |
     \\1 + cos(2*t)                    /
$$\left(\begin{cases} 1 & \text{for}\: t \bmod 2 \pi = 0 \\\frac{2}{\cos{\left(2 t \right)} + 1} & \text{otherwise} \end{cases}\right) - 1$$
                       2
     /       2/t   pi\\ 
     |1 + tan |- + --|| 
     \        \2   4 // 
-1 + -------------------
             2/t   pi\  
        4*tan |- + --|  
              \2   4 /  
$$\frac{\left(\tan^{2}{\left(\frac{t}{2} + \frac{\pi}{4} \right)} + 1\right)^{2}}{4 \tan^{2}{\left(\frac{t}{2} + \frac{\pi}{4} \right)}} - 1$$
     //     1        for t mod 2*pi = 0\
     ||                                |
     ||     2                          |
-1 + |<------------      otherwise     |
     ||       1                        |
     ||1 + --------                    |
     \\    sec(2*t)                    /
$$\left(\begin{cases} 1 & \text{for}\: t \bmod 2 \pi = 0 \\\frac{2}{1 + \frac{1}{\sec{\left(2 t \right)}}} & \text{otherwise} \end{cases}\right) - 1$$
                  2
     /       1   \ 
     |1 + -------| 
     |       2/t\| 
     |    cot |-|| 
     \        \2// 
-1 + --------------
                  2
     /       1   \ 
     |1 - -------| 
     |       2/t\| 
     |    cot |-|| 
     \        \2// 
$$-1 + \frac{\left(1 + \frac{1}{\cot^{2}{\left(\frac{t}{2} \right)}}\right)^{2}}{\left(1 - \frac{1}{\cot^{2}{\left(\frac{t}{2} \right)}}\right)^{2}}$$
     //        1          for t mod 2*pi = 0\
     ||                                     |
     ||        2                            |
-1 + |<-----------------      otherwise     |
     ||       /pi      \                    |
     ||1 + sin|-- + 2*t|                    |
     \\       \2       /                    /
$$\left(\begin{cases} 1 & \text{for}\: t \bmod 2 \pi = 0 \\\frac{2}{\sin{\left(2 t + \frac{\pi}{2} \right)} + 1} & \text{otherwise} \end{cases}\right) - 1$$
     //        1          for t mod 2*pi = 0\
     ||                                     |
     ||        2                            |
     ||-----------------      otherwise     |
-1 + |<          1                          |
     ||1 + -------------                    |
     ||       /pi      \                    |
     ||    csc|-- - 2*t|                    |
     \\       \2       /                    /
$$\left(\begin{cases} 1 & \text{for}\: t \bmod 2 \pi = 0 \\\frac{2}{1 + \frac{1}{\csc{\left(- 2 t + \frac{\pi}{2} \right)}}} & \text{otherwise} \end{cases}\right) - 1$$
     //       1         for t mod 2*pi = 0\
     ||                                   |
     ||       2                           |
     ||---------------      otherwise     |
-1 + |<           2                       |
     ||    1 - tan (t)                    |
     ||1 + -----------                    |
     ||           2                       |
     \\    1 + tan (t)                    /
$$\left(\begin{cases} 1 & \text{for}\: t \bmod 2 \pi = 0 \\\frac{2}{\frac{- \tan^{2}{\left(t \right)} + 1}{\tan^{2}{\left(t \right)} + 1} + 1} & \text{otherwise} \end{cases}\right) - 1$$
                    2
     /         4/t\\ 
     |    4*sin |-|| 
     |          \2/| 
     |1 + ---------| 
     |        2    | 
     \     sin (t) / 
-1 + ----------------
                    2
     /         4/t\\ 
     |    4*sin |-|| 
     |          \2/| 
     |1 - ---------| 
     |        2    | 
     \     sin (t) / 
$$-1 + \frac{\left(\frac{4 \sin^{4}{\left(\frac{t}{2} \right)}}{\sin^{2}{\left(t \right)}} + 1\right)^{2}}{\left(- \frac{4 \sin^{4}{\left(\frac{t}{2} \right)}}{\sin^{2}{\left(t \right)}} + 1\right)^{2}}$$
     //       1         for t mod 2*pi = 0\
     ||                                   |
     ||              2                    |
     || /       2/t\\                     |
     || |1 + cot |-||                     |
-1 + |< \        \2//                     |
     ||---------------      otherwise     |
     ||              2                    |
     ||/        2/t\\                     |
     |||-1 + cot |-||                     |
     \\\         \2//                     /
$$\left(\begin{cases} 1 & \text{for}\: t \bmod 2 \pi = 0 \\\frac{\left(\cot^{2}{\left(\frac{t}{2} \right)} + 1\right)^{2}}{\left(\cot^{2}{\left(\frac{t}{2} \right)} - 1\right)^{2}} & \text{otherwise} \end{cases}\right) - 1$$
     //                1                  for t mod 2*pi = 0\
     ||                                                     |
     ||                2                                    |
-1 + |<---------------------------------      otherwise     |
     ||    //   1      for t mod pi = 0\                    |
     ||1 + |<                          |                    |
     \\    \\cos(2*t)     otherwise    /                    /
$$\left(\begin{cases} 1 & \text{for}\: t \bmod 2 \pi = 0 \\\frac{2}{\left(\begin{cases} 1 & \text{for}\: t \bmod \pi = 0 \\\cos{\left(2 t \right)} & \text{otherwise} \end{cases}\right) + 1} & \text{otherwise} \end{cases}\right) - 1$$
     //       1         for t mod 2*pi = 0\
     ||                                   |
     ||              2                    |
     || /       1   \                     |
     || |1 + -------|                     |
     || |       2/t\|                     |
     || |    tan |-||                     |
-1 + |< \        \2//                     |
     ||---------------      otherwise     |
     ||              2                    |
     ||/        1   \                     |
     |||-1 + -------|                     |
     |||        2/t\|                     |
     |||     tan |-||                     |
     \\\         \2//                     /
$$\left(\begin{cases} 1 & \text{for}\: t \bmod 2 \pi = 0 \\\frac{\left(1 + \frac{1}{\tan^{2}{\left(\frac{t}{2} \right)}}\right)^{2}}{\left(-1 + \frac{1}{\tan^{2}{\left(\frac{t}{2} \right)}}\right)^{2}} & \text{otherwise} \end{cases}\right) - 1$$
     //                   /    pi\           \
     ||     zoo       for |t + --| mod pi = 0|
     ||                   \    2 /           |
     ||                                      |
     ||    2/t   pi\                         |
-1 + |< tan |- + --|                         |
     ||     \2   4 /                         |
     ||-------------         otherwise       |
     ||            2                         |
     ||(1 + sin(t))                          |
     \\                                      /
$$\left(\begin{cases} \tilde{\infty} & \text{for}\: \left(t + \frac{\pi}{2}\right) \bmod \pi = 0 \\\frac{\tan^{2}{\left(\frac{t}{2} + \frac{\pi}{4} \right)}}{\left(\sin{\left(t \right)} + 1\right)^{2}} & \text{otherwise} \end{cases}\right) - 1$$
                       2
     /       2/t   pi\\ 
     |    cos |- - --|| 
     |        \2   2 /| 
     |1 + ------------| 
     |         2/t\   | 
     |      cos |-|   | 
     \          \2/   / 
-1 + -------------------
                       2
     /       2/t   pi\\ 
     |    cos |- - --|| 
     |        \2   2 /| 
     |1 - ------------| 
     |         2/t\   | 
     |      cos |-|   | 
     \          \2/   / 
$$-1 + \frac{\left(1 + \frac{\cos^{2}{\left(\frac{t}{2} - \frac{\pi}{2} \right)}}{\cos^{2}{\left(\frac{t}{2} \right)}}\right)^{2}}{\left(1 - \frac{\cos^{2}{\left(\frac{t}{2} - \frac{\pi}{2} \right)}}{\cos^{2}{\left(\frac{t}{2} \right)}}\right)^{2}}$$
                       2
     /         2/t\   \ 
     |      sec |-|   | 
     |          \2/   | 
     |1 + ------------| 
     |       2/t   pi\| 
     |    sec |- - --|| 
     \        \2   2 // 
-1 + -------------------
                       2
     /         2/t\   \ 
     |      sec |-|   | 
     |          \2/   | 
     |1 - ------------| 
     |       2/t   pi\| 
     |    sec |- - --|| 
     \        \2   2 // 
$$-1 + \frac{\left(\frac{\sec^{2}{\left(\frac{t}{2} \right)}}{\sec^{2}{\left(\frac{t}{2} - \frac{\pi}{2} \right)}} + 1\right)^{2}}{\left(- \frac{\sec^{2}{\left(\frac{t}{2} \right)}}{\sec^{2}{\left(\frac{t}{2} - \frac{\pi}{2} \right)}} + 1\right)^{2}}$$
                       2
     /       2/pi   t\\ 
     |    csc |-- - -|| 
     |        \2    2/| 
     |1 + ------------| 
     |         2/t\   | 
     |      csc |-|   | 
     \          \2/   / 
-1 + -------------------
                       2
     /       2/pi   t\\ 
     |    csc |-- - -|| 
     |        \2    2/| 
     |1 - ------------| 
     |         2/t\   | 
     |      csc |-|   | 
     \          \2/   / 
$$-1 + \frac{\left(1 + \frac{\csc^{2}{\left(- \frac{t}{2} + \frac{\pi}{2} \right)}}{\csc^{2}{\left(\frac{t}{2} \right)}}\right)^{2}}{\left(1 - \frac{\csc^{2}{\left(- \frac{t}{2} + \frac{\pi}{2} \right)}}{\csc^{2}{\left(\frac{t}{2} \right)}}\right)^{2}}$$
     //                         /    pi\           \
     ||        zoo          for |t + --| mod pi = 0|
     ||                         \    2 /           |
     ||                                            |
     ||                  2                         |
     ||/       2/t   pi\\                          |
-1 + |<|1 + cot |- + --||                          |
     ||\        \2   4 //                          |
     ||-------------------         otherwise       |
     ||        2/t   pi\                           |
     ||   4*cot |- + --|                           |
     ||         \2   4 /                           |
     \\                                            /
$$\left(\begin{cases} \tilde{\infty} & \text{for}\: \left(t + \frac{\pi}{2}\right) \bmod \pi = 0 \\\frac{\left(\cot^{2}{\left(\frac{t}{2} + \frac{\pi}{4} \right)} + 1\right)^{2}}{4 \cot^{2}{\left(\frac{t}{2} + \frac{\pi}{4} \right)}} & \text{otherwise} \end{cases}\right) - 1$$
     //                  1                    for t mod 2*pi = 0\
     ||                                                         |
     ||                  2                                      |
     ||-------------------------------------      otherwise     |
     ||    //     1        for t mod pi = 0\                    |
-1 + |<    ||                              |                    |
     ||    ||        2                     |                    |
     ||1 + |<-1 + cot (t)                  |                    |
     ||    ||------------     otherwise    |                    |
     ||    ||       2                      |                    |
     \\    \\1 + cot (t)                   /                    /
$$\left(\begin{cases} 1 & \text{for}\: t \bmod 2 \pi = 0 \\\frac{2}{\left(\begin{cases} 1 & \text{for}\: t \bmod \pi = 0 \\\frac{\cot^{2}{\left(t \right)} - 1}{\cot^{2}{\left(t \right)} + 1} & \text{otherwise} \end{cases}\right) + 1} & \text{otherwise} \end{cases}\right) - 1$$
     //          1             for t mod 2*pi = 0\
     ||                                          |
     ||                     2                    |
     ||/   2           4/t\\                     |
     |||sin (t) + 4*sin |-||                     |
-1 + |<\                \2//                     |
     ||----------------------      otherwise     |
     ||                     2                    |
     ||/   2           4/t\\                     |
     |||sin (t) - 4*sin |-||                     |
     \\\                \2//                     /
$$\left(\begin{cases} 1 & \text{for}\: t \bmod 2 \pi = 0 \\\frac{\left(4 \sin^{4}{\left(\frac{t}{2} \right)} + \sin^{2}{\left(t \right)}\right)^{2}}{\left(- 4 \sin^{4}{\left(\frac{t}{2} \right)} + \sin^{2}{\left(t \right)}\right)^{2}} & \text{otherwise} \end{cases}\right) - 1$$
     //        1          for t mod 2*pi = 0\
     ||                                     |
     ||                2                    |
     || /        2    \                     |
     || |     sin (t) |                     |
     || |1 + ---------|                     |
     || |         4/t\|                     |
     || |    4*sin |-||                     |
-1 + |< \          \2//                     |
     ||-----------------      otherwise     |
     ||                2                    |
     ||/         2    \                     |
     |||      sin (t) |                     |
     |||-1 + ---------|                     |
     |||          4/t\|                     |
     |||     4*sin |-||                     |
     \\\           \2//                     /
$$\left(\begin{cases} 1 & \text{for}\: t \bmod 2 \pi = 0 \\\frac{\left(1 + \frac{\sin^{2}{\left(t \right)}}{4 \sin^{4}{\left(\frac{t}{2} \right)}}\right)^{2}}{\left(-1 + \frac{\sin^{2}{\left(t \right)}}{4 \sin^{4}{\left(\frac{t}{2} \right)}}\right)^{2}} & \text{otherwise} \end{cases}\right) - 1$$
     //         1            for t mod 2*pi = 0\
     ||                                        |
     ||                  2                     |
     ||/         2/t\   \                      |
     |||      cos |-|   |                      |
     |||          \2/   |                      |
     |||1 + ------------|                      |
     |||       2/t   pi\|                      |
     |||    cos |- - --||                      |
-1 + |<\        \2   2 //                      |
     ||--------------------      otherwise     |
     ||                   2                    |
     ||/          2/t\   \                     |
     |||       cos |-|   |                     |
     |||           \2/   |                     |
     |||-1 + ------------|                     |
     |||        2/t   pi\|                     |
     |||     cos |- - --||                     |
     \\\         \2   2 //                     /
$$\left(\begin{cases} 1 & \text{for}\: t \bmod 2 \pi = 0 \\\frac{\left(\frac{\cos^{2}{\left(\frac{t}{2} \right)}}{\cos^{2}{\left(\frac{t}{2} - \frac{\pi}{2} \right)}} + 1\right)^{2}}{\left(\frac{\cos^{2}{\left(\frac{t}{2} \right)}}{\cos^{2}{\left(\frac{t}{2} - \frac{\pi}{2} \right)}} - 1\right)^{2}} & \text{otherwise} \end{cases}\right) - 1$$
     //         1            for t mod 2*pi = 0\
     ||                                        |
     ||                  2                     |
     ||/       2/t   pi\\                      |
     |||    sec |- - --||                      |
     |||        \2   2 /|                      |
     |||1 + ------------|                      |
     |||         2/t\   |                      |
     |||      sec |-|   |                      |
-1 + |<\          \2/   /                      |
     ||--------------------      otherwise     |
     ||                   2                    |
     ||/        2/t   pi\\                     |
     |||     sec |- - --||                     |
     |||         \2   2 /|                     |
     |||-1 + ------------|                     |
     |||          2/t\   |                     |
     |||       sec |-|   |                     |
     \\\           \2/   /                     /
$$\left(\begin{cases} 1 & \text{for}\: t \bmod 2 \pi = 0 \\\frac{\left(1 + \frac{\sec^{2}{\left(\frac{t}{2} - \frac{\pi}{2} \right)}}{\sec^{2}{\left(\frac{t}{2} \right)}}\right)^{2}}{\left(-1 + \frac{\sec^{2}{\left(\frac{t}{2} - \frac{\pi}{2} \right)}}{\sec^{2}{\left(\frac{t}{2} \right)}}\right)^{2}} & \text{otherwise} \end{cases}\right) - 1$$
     //         1            for t mod 2*pi = 0\
     ||                                        |
     ||                  2                     |
     ||/         2/t\   \                      |
     |||      csc |-|   |                      |
     |||          \2/   |                      |
     |||1 + ------------|                      |
     |||       2/pi   t\|                      |
     |||    csc |-- - -||                      |
-1 + |<\        \2    2//                      |
     ||--------------------      otherwise     |
     ||                   2                    |
     ||/          2/t\   \                     |
     |||       csc |-|   |                     |
     |||           \2/   |                     |
     |||-1 + ------------|                     |
     |||        2/pi   t\|                     |
     |||     csc |-- - -||                     |
     \\\         \2    2//                     /
$$\left(\begin{cases} 1 & \text{for}\: t \bmod 2 \pi = 0 \\\frac{\left(\frac{\csc^{2}{\left(\frac{t}{2} \right)}}{\csc^{2}{\left(- \frac{t}{2} + \frac{\pi}{2} \right)}} + 1\right)^{2}}{\left(\frac{\csc^{2}{\left(\frac{t}{2} \right)}}{\csc^{2}{\left(- \frac{t}{2} + \frac{\pi}{2} \right)}} - 1\right)^{2}} & \text{otherwise} \end{cases}\right) - 1$$
-1 + Piecewise((1, Mod(t = 2*pi, 0)), ((1 + csc(t/2)^2/csc(pi/2 - t/2)^2)^2/(-1 + csc(t/2)^2/csc(pi/2 - t/2)^2)^2, True))
Численный ответ [src]
-1.0 + cos(t)^(-2)
-1.0 + cos(t)^(-2)
Рациональный знаменатель [src]
        1   
-1 + -------
        2   
     cos (t)
$$-1 + \frac{1}{\cos^{2}{\left(t \right)}}$$
       2   
1 - cos (t)
-----------
     2     
  cos (t)  
$$\frac{- \cos^{2}{\left(t \right)} + 1}{\cos^{2}{\left(t \right)}}$$
(1 - cos(t)^2)/cos(t)^2
Степени [src]
        1   
-1 + -------
        2   
     cos (t)
$$-1 + \frac{1}{\cos^{2}{\left(t \right)}}$$
            1       
-1 + ---------------
                   2
     / I*t    -I*t\ 
     |e      e    | 
     |---- + -----| 
     \ 2       2  / 
$$-1 + \frac{1}{\left(\frac{e^{i t}}{2} + \frac{e^{- i t}}{2}\right)^{2}}$$
-1 + (exp(i*t)/2 + exp(-i*t)/2)^(-2)