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(cos(3*x)-1-(9*x^2)/2)/(x^4*sinh(9/4*x))*x^3
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  • cos3x-1-9x^2/2/x^4sinh9/4xx^3
  • (cos(3*x)-1-(9*x^2) разделить на 2) разделить на (x^4*sinh(9 разделить на 4*x))*x^3
  • Похожие выражения

  • (cos(3*x)+1-(9*x^2)/2)/(x^4*sinh(9/4*x))*x^3
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Производная (cos(3*x)-1-(9*x^2)/2)/(x^4*sinh(9/4*x))*x^3

Функция f() - производная -го порядка в точке
v

График:

от до

Кусочно-заданная:

Решение

Вы ввели [src]
/                  2\   
|               9*x |  3
|cos(3*x) - 1 - ----|*x 
\                2  /   
------------------------
       4     /9*x\      
      x *sinh|---|      
             \ 4 /      
$$\frac{x^{3} \left(- \frac{9 x^{2}}{2} + \cos{\left(3 x \right)} - 1\right)}{x^{4} \sinh{\left(\frac{9 x}{4} \right)}}$$
  //                  2\   \
  ||               9*x |  3|
  ||cos(3*x) - 1 - ----|*x |
d |\                2  /   |
--|------------------------|
dx|       4     /9*x\      |
  |      x *sinh|---|      |
  \             \ 4 /      /
$$\frac{d}{d x} \frac{x^{3} \left(- \frac{9 x^{2}}{2} + \cos{\left(3 x \right)} - 1\right)}{x^{4} \sinh{\left(\frac{9 x}{4} \right)}}$$
График
Первая производная [src]
                                                                                /                      4     /9*x\\                      
                                                                                |                   9*x *cosh|---|| /                  2\
                                                                                |     3     /9*x\            \ 4 /| |               9*x |
                                                        /                  2\   |- 4*x *sinh|---| - --------------|*|cos(3*x) - 1 - ----|
 3      1                                2      1       |               9*x |   \           \ 4 /         4       / \                2  /
x *------------*(-9*x - 3*sin(3*x)) + 3*x *------------*|cos(3*x) - 1 - ----| + ---------------------------------------------------------
    4     /9*x\                             4     /9*x\ \                2  /                          5     2/9*x\                      
   x *sinh|---|                            x *sinh|---|                                               x *sinh |---|                      
          \ 4 /                                   \ 4 /                                                       \ 4 /                      
$$x^{3} \cdot \frac{1}{x^{4} \sinh{\left(\frac{9 x}{4} \right)}} \left(- 9 x - 3 \sin{\left(3 x \right)}\right) + 3 x^{2} \cdot \frac{1}{x^{4} \sinh{\left(\frac{9 x}{4} \right)}} \left(- \frac{9 x^{2}}{2} + \cos{\left(3 x \right)} - 1\right) + \frac{\left(- \frac{9 x^{4} \cosh{\left(\frac{9 x}{4} \right)}}{4} - 4 x^{3} \sinh{\left(\frac{9 x}{4} \right)}\right) \left(- \frac{9 x^{2}}{2} + \cos{\left(3 x \right)} - 1\right)}{x^{5} \sinh^{2}{\left(\frac{9 x}{4} \right)}}$$
Вторая производная [src]
                                                                                            //           /9*x\\                                    /       /9*x\       2     /9*x\            /9*x\\      /       /9*x\           /9*x\\     /       /9*x\           /9*x\\     /9*x\\                                                                                                               
                                                                                            ||     9*cosh|---||                                  3*|64*sinh|---| + 27*x *sinh|---| + 96*x*cosh|---||   16*|16*sinh|---| + 9*x*cosh|---||   9*|16*sinh|---| + 9*x*cosh|---||*cosh|---||                                                                                                               
                                                                    /                    2\ ||16         \ 4 /| /       /9*x\           /9*x\\     \       \ 4 /             \ 4 /            \ 4 //      \       \ 4 /           \ 4 //     \       \ 4 /           \ 4 //     \ 4 /|                                                                                                               
                                                                    \2 - 2*cos(3*x) + 9*x /*||-- + -----------|*|16*sinh|---| + 9*x*cosh|---|| - --------------------------------------------------- + --------------------------------- + ------------------------------------------|                                                                                                               
                                                                                            ||x         /9*x\ | \       \ 4 /           \ 4 //                            x                                            x                                       /9*x\                 |                      /       /9*x\           /9*x\\     /       /9*x\           /9*x\\ /                    2\
                                          /                    2\                           ||      sinh|---| |                                                                                                                                            sinh|---|                 |   3*(3*x + sin(3*x))*|16*sinh|---| + 9*x*cosh|---||   3*|16*sinh|---| + 9*x*cosh|---||*\2 - 2*cos(3*x) + 9*x /
                  18*(3*x + sin(3*x))   3*\2 - 2*cos(3*x) + 9*x /                           \\          \ 4 / /                                                                                                                                                \ 4 /                 /                      \       \ 4 /           \ 4 //     \       \ 4 /           \ 4 //                        
-9 - 9*cos(3*x) - ------------------- - ------------------------- - ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ + ------------------------------------------------- + --------------------------------------------------------
                           x                         2                                                                                                                         /9*x\                                                                                                                               /9*x\                                             2     /9*x\                     
                                                    x                                                                                                                 32*x*sinh|---|                                                                                                                       2*x*sinh|---|                                          4*x *sinh|---|                     
                                                                                                                                                                               \ 4 /                                                                                                                               \ 4 /                                                   \ 4 /                     
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                                                                                                   /9*x\                                                                                                                                                                                             
                                                                                                                                                                                             x*sinh|---|                                                                                                                                                                                             
                                                                                                                                                                                                   \ 4 /                                                                                                                                                                                             
$$\frac{- 9 \cos{\left(3 x \right)} - 9 + \frac{3 \cdot \left(3 x + \sin{\left(3 x \right)}\right) \left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right)}{2 x \sinh{\left(\frac{9 x}{4} \right)}} - \frac{18 \cdot \left(3 x + \sin{\left(3 x \right)}\right)}{x} - \frac{\left(9 x^{2} - 2 \cos{\left(3 x \right)} + 2\right) \left(\left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right) \left(\frac{9 \cosh{\left(\frac{9 x}{4} \right)}}{\sinh{\left(\frac{9 x}{4} \right)}} + \frac{16}{x}\right) + \frac{9 \cdot \left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right) \cosh{\left(\frac{9 x}{4} \right)}}{\sinh{\left(\frac{9 x}{4} \right)}} + \frac{16 \cdot \left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right)}{x} - \frac{3 \cdot \left(27 x^{2} \sinh{\left(\frac{9 x}{4} \right)} + 96 x \cosh{\left(\frac{9 x}{4} \right)} + 64 \sinh{\left(\frac{9 x}{4} \right)}\right)}{x}\right)}{32 x \sinh{\left(\frac{9 x}{4} \right)}} + \frac{3 \cdot \left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right) \left(9 x^{2} - 2 \cos{\left(3 x \right)} + 2\right)}{4 x^{2} \sinh{\left(\frac{9 x}{4} \right)}} - \frac{3 \cdot \left(9 x^{2} - 2 \cos{\left(3 x \right)} + 2\right)}{x^{2}}}{x \sinh{\left(\frac{9 x}{4} \right)}}$$
Третья производная [src]
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   /                                                                                                                                                                                                                                                                                                /           /9*x\\                                                        /           /9*x\\                                                                                                                                                     /           /9*x\\                                                                                        \                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |                                                                                                                                                                                                                                                                                                |     9*cosh|---||                                                        |     9*cosh|---||                                                                                                                                                     |     9*cosh|---||                                                                                        |                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |                                                                                                                                                                                                                                                                                                |16         \ 4 /| /       /9*x\       2     /9*x\            /9*x\\      |16         \ 4 /| /       /9*x\           /9*x\\                                                                                                                      |16         \ 4 /| /       /9*x\           /9*x\\     /9*x\                                               |                                                                                                                                                                   
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |                                                                                                                                                                                                                                                                                              3*|-- + -----------|*|64*sinh|---| + 27*x *sinh|---| + 96*x*cosh|---||   16*|-- + -----------|*|16*sinh|---| + 9*x*cosh|---||                                                                                                                    9*|-- + -----------|*|16*sinh|---| + 9*x*cosh|---||*cosh|---|                                               |                                                                                                                                                                   
                                                                                                       //           /9*x\\                                    /       /9*x\       2     /9*x\            /9*x\\      /       /9*x\           /9*x\\     /       /9*x\           /9*x\\     /9*x\\                             //           /9*x\\                                    /       /9*x\       2     /9*x\            /9*x\\      /       /9*x\           /9*x\\     /       /9*x\           /9*x\\     /9*x\\                           |                                                  /                    2/9*x\           /9*x\\                         /       /9*x\       2     /9*x\            /9*x\\     /        /9*x\        3     /9*x\         2     /9*x\              /9*x\\       /       /9*x\           /9*x\\     |x         /9*x\ | \       \ 4 /             \ 4 /            \ 4 //      |x         /9*x\ | \       \ 4 /           \ 4 //           2/9*x\ /       /9*x\           /9*x\\      /       /9*x\       2     /9*x\            /9*x\\     /9*x\     |x         /9*x\ | \       \ 4 /           \ 4 //     \ 4 /       /       /9*x\           /9*x\\     /9*x\|                                                                                                                                                                   
                                                                                                       ||     9*cosh|---||                                  3*|64*sinh|---| + 27*x *sinh|---| + 96*x*cosh|---||   16*|16*sinh|---| + 9*x*cosh|---||   9*|16*sinh|---| + 9*x*cosh|---||*cosh|---||                             ||     9*cosh|---||                                  3*|64*sinh|---| + 27*x *sinh|---| + 96*x*cosh|---||   16*|16*sinh|---| + 9*x*cosh|---||   9*|16*sinh|---| + 9*x*cosh|---||*cosh|---||                           |                                                  |            162*cosh |---|   288*cosh|---||                     144*|64*sinh|---| + 27*x *sinh|---| + 96*x*cosh|---||   3*|512*sinh|---| + 243*x *cosh|---| + 1296*x *sinh|---| + 1728*x*cosh|---||   576*|16*sinh|---| + 9*x*cosh|---||     |      sinh|---| |                                                        |      sinh|---| |                                  243*cosh |---|*|16*sinh|---| + 9*x*cosh|---||   81*|64*sinh|---| + 27*x *sinh|---| + 96*x*cosh|---||*cosh|---|     |      sinh|---| |                                            576*|16*sinh|---| + 9*x*cosh|---||*cosh|---||                                                                                                                                                                   
                                                                                                       ||16         \ 4 /| /       /9*x\           /9*x\\     \       \ 4 /             \ 4 /            \ 4 //      \       \ 4 /           \ 4 //     \       \ 4 /           \ 4 //     \ 4 /|     /                    2\ ||16         \ 4 /| /       /9*x\           /9*x\\     \       \ 4 /             \ 4 /            \ 4 //      \       \ 4 /           \ 4 //     \       \ 4 /           \ 4 //     \ 4 /|   /                    2\ |           /9*x\   /       /9*x\           /9*x\\ |      320            \ 4 /           \ 4 /|             /9*x\       \       \ 4 /             \ 4 /            \ 4 //     \        \ 4 /              \ 4 /               \ 4 /              \ 4 //       \       \ 4 /           \ 4 //     \          \ 4 / /                                                        \          \ 4 / /                                           \ 4 / \       \ 4 /           \ 4 //      \       \ 4 /             \ 4 /            \ 4 //     \ 4 /     \          \ 4 / /                                                \       \ 4 /           \ 4 //     \ 4 /|                                                                                                                                                                   
                                                                                    9*(3*x + sin(3*x))*||-- + -----------|*|16*sinh|---| + 9*x*cosh|---|| - --------------------------------------------------- + --------------------------------- + ------------------------------------------|   9*\2 - 2*cos(3*x) + 9*x /*||-- + -----------|*|16*sinh|---| + 9*x*cosh|---|| - --------------------------------------------------- + --------------------------------- + ------------------------------------------|   \2 - 2*cos(3*x) + 9*x /*|- 1296*sinh|---| + |16*sinh|---| + 9*x*cosh|---||*|-81 + --- + -------------- + -------------| - 729*x*cosh|---| - ----------------------------------------------------- + --------------------------------------------------------------------------- + ---------------------------------- - ---------------------------------------------------------------------- + ---------------------------------------------------- + --------------------------------------------- - -------------------------------------------------------------- + ------------------------------------------------------------- + --------------------------------------------|                                                                                                                                                                   
                                                                                                       ||x         /9*x\ | \       \ 4 /           \ 4 //                            x                                            x                                       /9*x\                 |                             ||x         /9*x\ | \       \ 4 /           \ 4 //                            x                                            x                                       /9*x\                 |                           |           \ 4 /   \       \ 4 /           \ 4 // |        2         2/9*x\            /9*x\ |             \ 4 /                              2                                                                  2                                                        2                                                     x                                                               x                                                   2/9*x\                                                   /9*x\                                                           /9*x\                                                   /9*x\                 |     /       /9*x\           /9*x\\ /                    2\                       /       /9*x\           /9*x\\                     /       /9*x\           /9*x\\
                                                          /                    2\                      ||      sinh|---| |                                                                                                                                            sinh|---|                 |                             ||      sinh|---| |                                                                                                                                            sinh|---|                 |                           |                                                  |       x      sinh |---|      x*sinh|---| |                                               x                                                                  x                                                        x                                                                                                                                                                      sinh |---|                                             x*sinh|---|                                                       sinh|---|                                             x*sinh|---|                 |   9*|16*sinh|---| + 9*x*cosh|---||*\2 - 2*cos(3*x) + 9*x /   27*(3*x + sin(3*x))*|16*sinh|---| + 9*x*cosh|---||   27*(1 + cos(3*x))*|16*sinh|---| + 9*x*cosh|---||
              81*(1 + cos(3*x))   54*(3*x + sin(3*x))   3*\2 - 2*cos(3*x) + 9*x /                      \\          \ 4 / /                                                                                                                                                \ 4 /                 /                             \\          \ 4 / /                                                                                                                                                \ 4 /                 /                           \                                                  \                   \ 4 /            \ 4 / /                                                                                                                                                                                                                                                                                                                                                       \ 4 /                                                   \ 4 /                                                           \ 4 /                                                   \ 4 /                 /     \       \ 4 /           \ 4 //                                               \       \ 4 /           \ 4 //                     \       \ 4 /           \ 4 //
27*sin(3*x) - ----------------- - ------------------- - ------------------------- - ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + -------------------------------------------------------- + -------------------------------------------------- + ------------------------------------------------
                      x                     2                        3                                                                                                                       /9*x\                                                                                                                                                                                                        2     /9*x\                                                                                                                                                                                                                                                                                                                                                                                                                                                   /9*x\                                                                                                                                                                                                                                                                                                                                                              3     /9*x\                                             2     /9*x\                                              /9*x\                  
                                           x                        x                                                                                                               16*x*sinh|---|                                                                                                                                                                                                    32*x *sinh|---|                                                                                                                                                                                                                                                                                                                                                                                                                                         128*x*sinh|---|                                                                                                                                                                                                                                                                                                                                                           4*x *sinh|---|                                          2*x *sinh|---|                                      4*x*sinh|---|                  
                                                                                                                                                                                             \ 4 /                                                                                                                                                                                                              \ 4 /                                                                                                                                                                                                                                                                                                                                                                                                                                                   \ 4 /                                                                                                                                                                                                                                                                                                                                                                    \ 4 /                                                   \ 4 /                                              \ 4 /                  
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          /9*x\                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    x*sinh|---|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          \ 4 /                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
$$\frac{27 \sin{\left(3 x \right)} - \frac{9 \cdot \left(3 x + \sin{\left(3 x \right)}\right) \left(\left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right) \left(\frac{9 \cosh{\left(\frac{9 x}{4} \right)}}{\sinh{\left(\frac{9 x}{4} \right)}} + \frac{16}{x}\right) + \frac{9 \cdot \left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right) \cosh{\left(\frac{9 x}{4} \right)}}{\sinh{\left(\frac{9 x}{4} \right)}} + \frac{16 \cdot \left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right)}{x} - \frac{3 \cdot \left(27 x^{2} \sinh{\left(\frac{9 x}{4} \right)} + 96 x \cosh{\left(\frac{9 x}{4} \right)} + 64 \sinh{\left(\frac{9 x}{4} \right)}\right)}{x}\right)}{16 x \sinh{\left(\frac{9 x}{4} \right)}} + \frac{27 \cdot \left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right) \left(\cos{\left(3 x \right)} + 1\right)}{4 x \sinh{\left(\frac{9 x}{4} \right)}} - \frac{81 \left(\cos{\left(3 x \right)} + 1\right)}{x} + \frac{\left(9 x^{2} - 2 \cos{\left(3 x \right)} + 2\right) \left(- 729 x \cosh{\left(\frac{9 x}{4} \right)} + \frac{9 \cdot \left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right) \left(\frac{9 \cosh{\left(\frac{9 x}{4} \right)}}{\sinh{\left(\frac{9 x}{4} \right)}} + \frac{16}{x}\right) \cosh{\left(\frac{9 x}{4} \right)}}{\sinh{\left(\frac{9 x}{4} \right)}} + \left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right) \left(-81 + \frac{162 \cosh^{2}{\left(\frac{9 x}{4} \right)}}{\sinh^{2}{\left(\frac{9 x}{4} \right)}} + \frac{288 \cosh{\left(\frac{9 x}{4} \right)}}{x \sinh{\left(\frac{9 x}{4} \right)}} + \frac{320}{x^{2}}\right) + \frac{243 \cdot \left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right) \cosh^{2}{\left(\frac{9 x}{4} \right)}}{\sinh^{2}{\left(\frac{9 x}{4} \right)}} - 1296 \sinh{\left(\frac{9 x}{4} \right)} + \frac{16 \cdot \left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right) \left(\frac{9 \cosh{\left(\frac{9 x}{4} \right)}}{\sinh{\left(\frac{9 x}{4} \right)}} + \frac{16}{x}\right)}{x} - \frac{3 \cdot \left(\frac{9 \cosh{\left(\frac{9 x}{4} \right)}}{\sinh{\left(\frac{9 x}{4} \right)}} + \frac{16}{x}\right) \left(27 x^{2} \sinh{\left(\frac{9 x}{4} \right)} + 96 x \cosh{\left(\frac{9 x}{4} \right)} + 64 \sinh{\left(\frac{9 x}{4} \right)}\right)}{x} + \frac{576 \cdot \left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right) \cosh{\left(\frac{9 x}{4} \right)}}{x \sinh{\left(\frac{9 x}{4} \right)}} - \frac{81 \cdot \left(27 x^{2} \sinh{\left(\frac{9 x}{4} \right)} + 96 x \cosh{\left(\frac{9 x}{4} \right)} + 64 \sinh{\left(\frac{9 x}{4} \right)}\right) \cosh{\left(\frac{9 x}{4} \right)}}{x \sinh{\left(\frac{9 x}{4} \right)}} + \frac{576 \cdot \left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right)}{x^{2}} - \frac{144 \cdot \left(27 x^{2} \sinh{\left(\frac{9 x}{4} \right)} + 96 x \cosh{\left(\frac{9 x}{4} \right)} + 64 \sinh{\left(\frac{9 x}{4} \right)}\right)}{x^{2}} + \frac{3 \cdot \left(243 x^{3} \cosh{\left(\frac{9 x}{4} \right)} + 1296 x^{2} \sinh{\left(\frac{9 x}{4} \right)} + 1728 x \cosh{\left(\frac{9 x}{4} \right)} + 512 \sinh{\left(\frac{9 x}{4} \right)}\right)}{x^{2}}\right)}{128 x \sinh{\left(\frac{9 x}{4} \right)}} + \frac{27 \cdot \left(3 x + \sin{\left(3 x \right)}\right) \left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right)}{2 x^{2} \sinh{\left(\frac{9 x}{4} \right)}} - \frac{54 \cdot \left(3 x + \sin{\left(3 x \right)}\right)}{x^{2}} - \frac{9 \cdot \left(9 x^{2} - 2 \cos{\left(3 x \right)} + 2\right) \left(\left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right) \left(\frac{9 \cosh{\left(\frac{9 x}{4} \right)}}{\sinh{\left(\frac{9 x}{4} \right)}} + \frac{16}{x}\right) + \frac{9 \cdot \left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right) \cosh{\left(\frac{9 x}{4} \right)}}{\sinh{\left(\frac{9 x}{4} \right)}} + \frac{16 \cdot \left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right)}{x} - \frac{3 \cdot \left(27 x^{2} \sinh{\left(\frac{9 x}{4} \right)} + 96 x \cosh{\left(\frac{9 x}{4} \right)} + 64 \sinh{\left(\frac{9 x}{4} \right)}\right)}{x}\right)}{32 x^{2} \sinh{\left(\frac{9 x}{4} \right)}} + \frac{9 \cdot \left(9 x \cosh{\left(\frac{9 x}{4} \right)} + 16 \sinh{\left(\frac{9 x}{4} \right)}\right) \left(9 x^{2} - 2 \cos{\left(3 x \right)} + 2\right)}{4 x^{3} \sinh{\left(\frac{9 x}{4} \right)}} - \frac{3 \cdot \left(9 x^{2} - 2 \cos{\left(3 x \right)} + 2\right)}{x^{3}}}{x \sinh{\left(\frac{9 x}{4} \right)}}$$
График
Производная (cos(3*x)-1-(9*x^2)/2)/(x^4*sinh(9/4*x))*x^3