Mister Exam

Other calculators

Integral of 1/(2+sin(x)*sin(x)) dx

Limits of integration:

from to
v

The graph:

from to

Piecewise:

The solution

You have entered [src]
 pi                     
 --                     
 4                      
  /                     
 |                      
 |          1           
 |  ----------------- dx
 |  2 + sin(x)*sin(x)   
 |                      
/                       
0                       
$$\int\limits_{0}^{\frac{\pi}{4}} \frac{1}{\sin{\left(x \right)} \sin{\left(x \right)} + 2}\, dx$$
Integral(1/(2 + sin(x)*sin(x)), (x, 0, pi/4))
The answer (Indefinite) [src]
                                                     /        /x   pi\       /       /x\    \\                                  /        /x   pi\       /       /x\    \\                                   /        /x   pi\       /       /x\    \\    
                                         ___________ |        |- - --|       |    tan|-|    ||                      ___________ |        |- - --|       |    tan|-|    ||                       ___________ |        |- - --|       |    tan|-|    ||    
                                        /       ___  |        |2   2 |       |       \2/    ||                     /       ___  |        |2   2 |       |       \2/    ||                ___   /       ___  |        |2   2 |       |       \2/    ||    
                                      \/  2 - \/ 3  *|pi*floor|------| + atan|--------------||                 2*\/  2 + \/ 3  *|pi*floor|------| + atan|--------------||              \/ 3 *\/  2 + \/ 3  *|pi*floor|------| + atan|--------------||    
  /                                                  |        \  pi  /       |   ___________||                                  |        \  pi  /       |   ___________||                                   |        \  pi  /       |   ___________||    
 |                                                   |                       |  /       ___ ||                                  |                       |  /       ___ ||                                   |                       |  /       ___ ||    
 |         1                                         \                       \\/  2 + \/ 3  //                                  \                       \\/  2 - \/ 3  //                                   \                       \\/  2 - \/ 3  //    
 | ----------------- dx = C - ----------------------------------------------------------------------- - ----------------------------------------------------------------------- + -----------------------------------------------------------------------
 | 2 + sin(x)*sin(x)                 ___________    ___________            ___________    ___________          ___________    ___________            ___________    ___________          ___________    ___________            ___________    ___________
 |                                  /       ___    /       ___      ___   /       ___    /       ___          /       ___    /       ___      ___   /       ___    /       ___          /       ___    /       ___      ___   /       ___    /       ___ 
/                             - 3*\/  2 + \/ 3  *\/  2 - \/ 3   + \/ 3 *\/  2 + \/ 3  *\/  2 - \/ 3     - 3*\/  2 + \/ 3  *\/  2 - \/ 3   + \/ 3 *\/  2 + \/ 3  *\/  2 - \/ 3     - 3*\/  2 + \/ 3  *\/  2 - \/ 3   + \/ 3 *\/  2 + \/ 3  *\/  2 - \/ 3  
$$\int \frac{1}{\sin{\left(x \right)} \sin{\left(x \right)} + 2}\, dx = C + \frac{\sqrt{3} \sqrt{\sqrt{3} + 2} \left(\operatorname{atan}{\left(\frac{\tan{\left(\frac{x}{2} \right)}}{\sqrt{2 - \sqrt{3}}} \right)} + \pi \left\lfloor{\frac{\frac{x}{2} - \frac{\pi}{2}}{\pi}}\right\rfloor\right)}{- 3 \sqrt{2 - \sqrt{3}} \sqrt{\sqrt{3} + 2} + \sqrt{3} \sqrt{2 - \sqrt{3}} \sqrt{\sqrt{3} + 2}} - \frac{2 \sqrt{\sqrt{3} + 2} \left(\operatorname{atan}{\left(\frac{\tan{\left(\frac{x}{2} \right)}}{\sqrt{2 - \sqrt{3}}} \right)} + \pi \left\lfloor{\frac{\frac{x}{2} - \frac{\pi}{2}}{\pi}}\right\rfloor\right)}{- 3 \sqrt{2 - \sqrt{3}} \sqrt{\sqrt{3} + 2} + \sqrt{3} \sqrt{2 - \sqrt{3}} \sqrt{\sqrt{3} + 2}} - \frac{\sqrt{2 - \sqrt{3}} \left(\operatorname{atan}{\left(\frac{\tan{\left(\frac{x}{2} \right)}}{\sqrt{\sqrt{3} + 2}} \right)} + \pi \left\lfloor{\frac{\frac{x}{2} - \frac{\pi}{2}}{\pi}}\right\rfloor\right)}{- 3 \sqrt{2 - \sqrt{3}} \sqrt{\sqrt{3} + 2} + \sqrt{3} \sqrt{2 - \sqrt{3}} \sqrt{\sqrt{3} + 2}}$$
The graph
The answer [src]
                                                         /          /         ___  \\                                                                  /          /         ___  \\                                                          ___________    ___________ /          /         ___  \\                                                          ___________    ___________ /          /         ___  \\
                                                         |          |  -1 + \/ 2   ||                                                              ___ |          |  -1 + \/ 2   ||                                                         /       ___    /       ___  |          |  -1 + \/ 2   ||                                                   ___   /       ___    /       ___  |          |  -1 + \/ 2   ||
                                                       2*|-pi + atan|--------------||                                                            \/ 3 *|-pi + atan|--------------||                                                     2*\/  2 + \/ 3  *\/  2 - \/ 3  *|-pi + atan|--------------||                                                 \/ 3 *\/  2 + \/ 3  *\/  2 - \/ 3  *|-pi + atan|--------------||
                                                         |          |   ___________||                                                                  |          |   ___________||                    ___________    ___________                                       |          |   ___________||                  ___________    ___________                                         |          |   ___________||
                                                         |          |  /       ___ ||                                ___                               |          |  /       ___ ||                   /       ___    /       ___                                        |          |  /       ___ ||           ___   /       ___    /       ___                                          |          |  /       ___ ||
                      2*pi                               \          \\/  2 + \/ 3  //                           pi*\/ 3                                \          \\/  2 + \/ 3  //            2*pi*\/  2 + \/ 3  *\/  2 - \/ 3                                         \          \\/  2 - \/ 3  //      pi*\/ 3 *\/  2 + \/ 3  *\/  2 - \/ 3                                           \          \\/  2 - \/ 3  //
- ------------------------------------------- - ------------------------------------------- + ------------------------------------------- + ------------------------------------------- - ------------------------------------------- - ------------------------------------------------------------ + ------------------------------------------- + ----------------------------------------------------------------
         ___________              ___________          ___________              ___________          ___________              ___________          ___________              ___________          ___________              ___________                  ___________              ___________                   ___________              ___________                    ___________              ___________           
        /       ___        ___   /       ___          /       ___        ___   /       ___          /       ___        ___   /       ___          /       ___        ___   /       ___          /       ___        ___   /       ___                  /       ___        ___   /       ___                   /       ___        ___   /       ___                    /       ___        ___   /       ___            
  - 9*\/  2 + \/ 3   + 5*\/ 3 *\/  2 + \/ 3     - 9*\/  2 + \/ 3   + 5*\/ 3 *\/  2 + \/ 3     - 9*\/  2 + \/ 3   + 5*\/ 3 *\/  2 + \/ 3     - 9*\/  2 + \/ 3   + 5*\/ 3 *\/  2 + \/ 3     - 9*\/  2 + \/ 3   + 5*\/ 3 *\/  2 + \/ 3             - 9*\/  2 + \/ 3   + 5*\/ 3 *\/  2 + \/ 3              - 9*\/  2 + \/ 3   + 5*\/ 3 *\/  2 + \/ 3               - 9*\/  2 + \/ 3   + 5*\/ 3 *\/  2 + \/ 3             
$$- \frac{2 \left(- \pi + \operatorname{atan}{\left(\frac{-1 + \sqrt{2}}{\sqrt{\sqrt{3} + 2}} \right)}\right)}{- 9 \sqrt{\sqrt{3} + 2} + 5 \sqrt{3} \sqrt{\sqrt{3} + 2}} + \frac{\sqrt{3} \pi}{- 9 \sqrt{\sqrt{3} + 2} + 5 \sqrt{3} \sqrt{\sqrt{3} + 2}} + \frac{\sqrt{3} \pi \sqrt{2 - \sqrt{3}} \sqrt{\sqrt{3} + 2}}{- 9 \sqrt{\sqrt{3} + 2} + 5 \sqrt{3} \sqrt{\sqrt{3} + 2}} - \frac{2 \sqrt{2 - \sqrt{3}} \sqrt{\sqrt{3} + 2} \left(- \pi + \operatorname{atan}{\left(\frac{-1 + \sqrt{2}}{\sqrt{2 - \sqrt{3}}} \right)}\right)}{- 9 \sqrt{\sqrt{3} + 2} + 5 \sqrt{3} \sqrt{\sqrt{3} + 2}} + \frac{\sqrt{3} \sqrt{2 - \sqrt{3}} \sqrt{\sqrt{3} + 2} \left(- \pi + \operatorname{atan}{\left(\frac{-1 + \sqrt{2}}{\sqrt{2 - \sqrt{3}}} \right)}\right)}{- 9 \sqrt{\sqrt{3} + 2} + 5 \sqrt{3} \sqrt{\sqrt{3} + 2}} + \frac{\sqrt{3} \left(- \pi + \operatorname{atan}{\left(\frac{-1 + \sqrt{2}}{\sqrt{\sqrt{3} + 2}} \right)}\right)}{- 9 \sqrt{\sqrt{3} + 2} + 5 \sqrt{3} \sqrt{\sqrt{3} + 2}} - \frac{2 \pi}{- 9 \sqrt{\sqrt{3} + 2} + 5 \sqrt{3} \sqrt{\sqrt{3} + 2}} - \frac{2 \pi \sqrt{2 - \sqrt{3}} \sqrt{\sqrt{3} + 2}}{- 9 \sqrt{\sqrt{3} + 2} + 5 \sqrt{3} \sqrt{\sqrt{3} + 2}}$$
=
=
                                                         /          /         ___  \\                                                                  /          /         ___  \\                                                          ___________    ___________ /          /         ___  \\                                                          ___________    ___________ /          /         ___  \\
                                                         |          |  -1 + \/ 2   ||                                                              ___ |          |  -1 + \/ 2   ||                                                         /       ___    /       ___  |          |  -1 + \/ 2   ||                                                   ___   /       ___    /       ___  |          |  -1 + \/ 2   ||
                                                       2*|-pi + atan|--------------||                                                            \/ 3 *|-pi + atan|--------------||                                                     2*\/  2 + \/ 3  *\/  2 - \/ 3  *|-pi + atan|--------------||                                                 \/ 3 *\/  2 + \/ 3  *\/  2 - \/ 3  *|-pi + atan|--------------||
                                                         |          |   ___________||                                                                  |          |   ___________||                    ___________    ___________                                       |          |   ___________||                  ___________    ___________                                         |          |   ___________||
                                                         |          |  /       ___ ||                                ___                               |          |  /       ___ ||                   /       ___    /       ___                                        |          |  /       ___ ||           ___   /       ___    /       ___                                          |          |  /       ___ ||
                      2*pi                               \          \\/  2 + \/ 3  //                           pi*\/ 3                                \          \\/  2 + \/ 3  //            2*pi*\/  2 + \/ 3  *\/  2 - \/ 3                                         \          \\/  2 - \/ 3  //      pi*\/ 3 *\/  2 + \/ 3  *\/  2 - \/ 3                                           \          \\/  2 - \/ 3  //
- ------------------------------------------- - ------------------------------------------- + ------------------------------------------- + ------------------------------------------- - ------------------------------------------- - ------------------------------------------------------------ + ------------------------------------------- + ----------------------------------------------------------------
         ___________              ___________          ___________              ___________          ___________              ___________          ___________              ___________          ___________              ___________                  ___________              ___________                   ___________              ___________                    ___________              ___________           
        /       ___        ___   /       ___          /       ___        ___   /       ___          /       ___        ___   /       ___          /       ___        ___   /       ___          /       ___        ___   /       ___                  /       ___        ___   /       ___                   /       ___        ___   /       ___                    /       ___        ___   /       ___            
  - 9*\/  2 + \/ 3   + 5*\/ 3 *\/  2 + \/ 3     - 9*\/  2 + \/ 3   + 5*\/ 3 *\/  2 + \/ 3     - 9*\/  2 + \/ 3   + 5*\/ 3 *\/  2 + \/ 3     - 9*\/  2 + \/ 3   + 5*\/ 3 *\/  2 + \/ 3     - 9*\/  2 + \/ 3   + 5*\/ 3 *\/  2 + \/ 3             - 9*\/  2 + \/ 3   + 5*\/ 3 *\/  2 + \/ 3              - 9*\/  2 + \/ 3   + 5*\/ 3 *\/  2 + \/ 3               - 9*\/  2 + \/ 3   + 5*\/ 3 *\/  2 + \/ 3             
$$- \frac{2 \left(- \pi + \operatorname{atan}{\left(\frac{-1 + \sqrt{2}}{\sqrt{\sqrt{3} + 2}} \right)}\right)}{- 9 \sqrt{\sqrt{3} + 2} + 5 \sqrt{3} \sqrt{\sqrt{3} + 2}} + \frac{\sqrt{3} \pi}{- 9 \sqrt{\sqrt{3} + 2} + 5 \sqrt{3} \sqrt{\sqrt{3} + 2}} + \frac{\sqrt{3} \pi \sqrt{2 - \sqrt{3}} \sqrt{\sqrt{3} + 2}}{- 9 \sqrt{\sqrt{3} + 2} + 5 \sqrt{3} \sqrt{\sqrt{3} + 2}} - \frac{2 \sqrt{2 - \sqrt{3}} \sqrt{\sqrt{3} + 2} \left(- \pi + \operatorname{atan}{\left(\frac{-1 + \sqrt{2}}{\sqrt{2 - \sqrt{3}}} \right)}\right)}{- 9 \sqrt{\sqrt{3} + 2} + 5 \sqrt{3} \sqrt{\sqrt{3} + 2}} + \frac{\sqrt{3} \sqrt{2 - \sqrt{3}} \sqrt{\sqrt{3} + 2} \left(- \pi + \operatorname{atan}{\left(\frac{-1 + \sqrt{2}}{\sqrt{2 - \sqrt{3}}} \right)}\right)}{- 9 \sqrt{\sqrt{3} + 2} + 5 \sqrt{3} \sqrt{\sqrt{3} + 2}} + \frac{\sqrt{3} \left(- \pi + \operatorname{atan}{\left(\frac{-1 + \sqrt{2}}{\sqrt{\sqrt{3} + 2}} \right)}\right)}{- 9 \sqrt{\sqrt{3} + 2} + 5 \sqrt{3} \sqrt{\sqrt{3} + 2}} - \frac{2 \pi}{- 9 \sqrt{\sqrt{3} + 2} + 5 \sqrt{3} \sqrt{\sqrt{3} + 2}} - \frac{2 \pi \sqrt{2 - \sqrt{3}} \sqrt{\sqrt{3} + 2}}{- 9 \sqrt{\sqrt{3} + 2} + 5 \sqrt{3} \sqrt{\sqrt{3} + 2}}$$
-2*pi/(-9*sqrt(2 + sqrt(3)) + 5*sqrt(3)*sqrt(2 + sqrt(3))) - 2*(-pi + atan((-1 + sqrt(2))/sqrt(2 + sqrt(3))))/(-9*sqrt(2 + sqrt(3)) + 5*sqrt(3)*sqrt(2 + sqrt(3))) + pi*sqrt(3)/(-9*sqrt(2 + sqrt(3)) + 5*sqrt(3)*sqrt(2 + sqrt(3))) + sqrt(3)*(-pi + atan((-1 + sqrt(2))/sqrt(2 + sqrt(3))))/(-9*sqrt(2 + sqrt(3)) + 5*sqrt(3)*sqrt(2 + sqrt(3))) - 2*pi*sqrt(2 + sqrt(3))*sqrt(2 - sqrt(3))/(-9*sqrt(2 + sqrt(3)) + 5*sqrt(3)*sqrt(2 + sqrt(3))) - 2*sqrt(2 + sqrt(3))*sqrt(2 - sqrt(3))*(-pi + atan((-1 + sqrt(2))/sqrt(2 - sqrt(3))))/(-9*sqrt(2 + sqrt(3)) + 5*sqrt(3)*sqrt(2 + sqrt(3))) + pi*sqrt(3)*sqrt(2 + sqrt(3))*sqrt(2 - sqrt(3))/(-9*sqrt(2 + sqrt(3)) + 5*sqrt(3)*sqrt(2 + sqrt(3))) + sqrt(3)*sqrt(2 + sqrt(3))*sqrt(2 - sqrt(3))*(-pi + atan((-1 + sqrt(2))/sqrt(2 - sqrt(3))))/(-9*sqrt(2 + sqrt(3)) + 5*sqrt(3)*sqrt(2 + sqrt(3)))
Numerical answer [src]
0.361739471007471
0.361739471007471

    Use the examples entering the upper and lower limits of integration.