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Производная atan((t)*((1-x)/(1+x))^2)

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

Вы ввели [src]
    /         2\
    |  /1 - x\ |
atan|t*|-----| |
    \  \1 + x/ /
$$\operatorname{atan}{\left(t \left(\frac{- x + 1}{x + 1}\right)^{2} \right)}$$
  /    /         2\\
d |    |  /1 - x\ ||
--|atan|t*|-----| ||
dx\    \  \1 + x/ //
$$\frac{\partial}{\partial x} \operatorname{atan}{\left(t \left(\frac{- x + 1}{x + 1}\right)^{2} \right)}$$
Первая производная [src]
          /    2     2*(1 - x)\
t*(1 - x)*|- ----- - ---------|
          |  1 + x           2|
          \           (1 + x) /
-------------------------------
           /     2        4\   
           |    t *(1 - x) |   
   (1 + x)*|1 + -----------|   
           |             4 |   
           \      (1 + x)  /   
$$\frac{t \left(- x + 1\right) \left(- \frac{2 \cdot \left(- x + 1\right)}{\left(x + 1\right)^{2}} - \frac{2}{x + 1}\right)}{\left(x + 1\right) \left(\frac{t^{2} \left(- x + 1\right)^{4}}{\left(x + 1\right)^{4}} + 1\right)}$$
Вторая производная [src]
                  /                     2         4 /     -1 + x\\
                  |                  4*t *(-1 + x) *|-1 + ------||
    /     -1 + x\ |     3*(-1 + x)                  \     1 + x /|
2*t*|-1 + ------|*|-1 + ---------- - ----------------------------|
    \     1 + x / |       1 + x               /     2         4\ |
                  |                         4 |    t *(-1 + x) | |
                  |                  (1 + x) *|1 + ------------| |
                  |                           |             4  | |
                  \                           \      (1 + x)   / /
------------------------------------------------------------------
                            /     2         4\                    
                          2 |    t *(-1 + x) |                    
                   (1 + x) *|1 + ------------|                    
                            |             4  |                    
                            \      (1 + x)   /                    
$$\frac{2 t \left(\frac{x - 1}{x + 1} - 1\right) \left(- \frac{4 t^{2} \left(x - 1\right)^{4} \left(\frac{x - 1}{x + 1} - 1\right)}{\left(x + 1\right)^{4} \left(\frac{t^{2} \left(x - 1\right)^{4}}{\left(x + 1\right)^{4}} + 1\right)} + \frac{3 \left(x - 1\right)}{x + 1} - 1\right)}{\left(x + 1\right)^{2} \left(\frac{t^{2} \left(x - 1\right)^{4}}{\left(x + 1\right)^{4}} + 1\right)}$$
Третья производная [src]
                  /                                                                                                /                           2\                                \
                  |                                              2                                     2         3 |    8*(-1 + x)   5*(-1 + x) |                                |
                  |                     4         7 /     -1 + x\       2         3 /     -1 + x\   2*t *(-1 + x) *|3 - ---------- + -----------|       2         4 /     -1 + x\|
                  |                 16*t *(-1 + x) *|-1 + ------|    4*t *(-1 + x) *|-1 + ------|                  |      1 + x               2 |   12*t *(-1 + x) *|-1 + ------||
    /     -1 + x\ |    6*(-1 + x)                   \     1 + x /                   \     1 + x /                  \                   (1 + x)  /                   \     1 + x /|
4*t*|-1 + ------|*|3 - ---------- - ------------------------------ - ---------------------------- + --------------------------------------------- + -----------------------------|
    \     1 + x / |      1 + x                                  2             /     2         4\                      /     2         4\                      /     2         4\ |
                  |                           /     2         4\            3 |    t *(-1 + x) |                    3 |    t *(-1 + x) |                    4 |    t *(-1 + x) | |
                  |                         7 |    t *(-1 + x) |     (1 + x) *|1 + ------------|             (1 + x) *|1 + ------------|             (1 + x) *|1 + ------------| |
                  |                  (1 + x) *|1 + ------------|              |             4  |                      |             4  |                      |             4  | |
                  |                           |             4  |              \      (1 + x)   /                      \      (1 + x)   /                      \      (1 + x)   / |
                  \                           \      (1 + x)   /                                                                                                                 /
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                    /     2         4\                                                                            
                                                                                  3 |    t *(-1 + x) |                                                                            
                                                                           (1 + x) *|1 + ------------|                                                                            
                                                                                    |             4  |                                                                            
                                                                                    \      (1 + x)   /                                                                            
$$\frac{4 t \left(\frac{x - 1}{x + 1} - 1\right) \left(- \frac{16 t^{4} \left(x - 1\right)^{7} \left(\frac{x - 1}{x + 1} - 1\right)^{2}}{\left(x + 1\right)^{7} \left(\frac{t^{2} \left(x - 1\right)^{4}}{\left(x + 1\right)^{4}} + 1\right)^{2}} + \frac{12 t^{2} \left(x - 1\right)^{4} \left(\frac{x - 1}{x + 1} - 1\right)}{\left(x + 1\right)^{4} \left(\frac{t^{2} \left(x - 1\right)^{4}}{\left(x + 1\right)^{4}} + 1\right)} - \frac{4 t^{2} \left(x - 1\right)^{3} \left(\frac{x - 1}{x + 1} - 1\right)}{\left(x + 1\right)^{3} \left(\frac{t^{2} \left(x - 1\right)^{4}}{\left(x + 1\right)^{4}} + 1\right)} + \frac{2 t^{2} \left(x - 1\right)^{3} \cdot \left(\frac{5 \left(x - 1\right)^{2}}{\left(x + 1\right)^{2}} - \frac{8 \left(x - 1\right)}{x + 1} + 3\right)}{\left(x + 1\right)^{3} \left(\frac{t^{2} \left(x - 1\right)^{4}}{\left(x + 1\right)^{4}} + 1\right)} - \frac{6 \left(x - 1\right)}{x + 1} + 3\right)}{\left(x + 1\right)^{3} \left(\frac{t^{2} \left(x - 1\right)^{4}}{\left(x + 1\right)^{4}} + 1\right)}$$