Подробное решение
Не могу найти шаги в поиске этой производной.
Но производная
Ответ:
x _________ / log(atan(x)) 1 \
\/ atan(x) *|- ------------ + ------------------|
| 2 / 2\ |
\ x x*\1 + x /*atan(x)/
$$\left(\frac{1}{x \left(x^{2} + 1\right) \operatorname{atan}{\left (x \right )}} - \frac{1}{x^{2}} \log{\left (\operatorname{atan}{\left (x \right )} \right )}\right) \operatorname{atan}^{\frac{1}{x}}{\left (x \right )}$$
/ 2 \
|/ 1 log(atan(x))\ |
||---------------- - ------------| |
||/ 2\ x | |
x _________ |\\1 + x /*atan(x) / 2 2*log(atan(x)) 1 2 |
\/ atan(x) *|---------------------------------- - ----------------- + -------------- - -------------------- - -------------------|
| 2 2 3 2 2 / 2\ |
| x / 2\ x / 2\ 2 x *\1 + x /*atan(x)|
\ \1 + x / *atan(x) x*\1 + x / *atan (x) /
$$\left(- \frac{2}{\left(x^{2} + 1\right)^{2} \operatorname{atan}{\left (x \right )}} - \frac{1}{x \left(x^{2} + 1\right)^{2} \operatorname{atan}^{2}{\left (x \right )}} + \frac{1}{x^{2}} \left(\frac{1}{\left(x^{2} + 1\right) \operatorname{atan}{\left (x \right )}} - \frac{1}{x} \log{\left (\operatorname{atan}{\left (x \right )} \right )}\right)^{2} - \frac{2}{x^{2} \left(x^{2} + 1\right) \operatorname{atan}{\left (x \right )}} + \frac{2}{x^{3}} \log{\left (\operatorname{atan}{\left (x \right )} \right )}\right) \operatorname{atan}^{\frac{1}{x}}{\left (x \right )}$$
/ 3 / 1 log(atan(x))\ / 2*log(atan(x)) 2 1 2 \ \
|/ 1 log(atan(x))\ 3*|---------------- - ------------|*|- -------------- + ----------------- + -------------------- + -------------------| |
||---------------- - ------------| |/ 2\ x | | 3 2 2 2 / 2\ | |
||/ 2\ x | \\1 + x /*atan(x) / | x / 2\ / 2\ 2 x *\1 + x /*atan(x)| |
x _________ |\\1 + x /*atan(x) / 6*log(atan(x)) 6 \ \1 + x / *atan(x) x*\1 + x / *atan (x) / 2 3 4 6 8*x |
\/ atan(x) *|---------------------------------- - -------------- + ------------------ - ----------------------------------------------------------------------------------------------------------------------- + -------------------- + --------------------- + ------------------- + ------------------- + -----------------|
| 3 4 3 x 3 2 2 3 / 2\ 3 |
| x x / 2\ 2 / 2\ 3 2 / 2\ 2 / 2\ x *\1 + x /*atan(x) / 2\ |
\ \1 + x / *atan (x) x*\1 + x / *atan (x) x *\1 + x / *atan (x) x*\1 + x / *atan(x) \1 + x / *atan(x)/
$$\left(\frac{8 x}{\left(x^{2} + 1\right)^{3} \operatorname{atan}{\left (x \right )}} + \frac{6}{\left(x^{2} + 1\right)^{3} \operatorname{atan}^{2}{\left (x \right )}} - \frac{3}{x} \left(\frac{1}{\left(x^{2} + 1\right) \operatorname{atan}{\left (x \right )}} - \frac{1}{x} \log{\left (\operatorname{atan}{\left (x \right )} \right )}\right) \left(\frac{2}{\left(x^{2} + 1\right)^{2} \operatorname{atan}{\left (x \right )}} + \frac{1}{x \left(x^{2} + 1\right)^{2} \operatorname{atan}^{2}{\left (x \right )}} + \frac{2}{x^{2} \left(x^{2} + 1\right) \operatorname{atan}{\left (x \right )}} - \frac{2}{x^{3}} \log{\left (\operatorname{atan}{\left (x \right )} \right )}\right) + \frac{4}{x \left(x^{2} + 1\right)^{2} \operatorname{atan}{\left (x \right )}} + \frac{2}{x \left(x^{2} + 1\right)^{3} \operatorname{atan}^{3}{\left (x \right )}} + \frac{3}{x^{2} \left(x^{2} + 1\right)^{2} \operatorname{atan}^{2}{\left (x \right )}} + \frac{1}{x^{3}} \left(\frac{1}{\left(x^{2} + 1\right) \operatorname{atan}{\left (x \right )}} - \frac{1}{x} \log{\left (\operatorname{atan}{\left (x \right )} \right )}\right)^{3} + \frac{6}{x^{3} \left(x^{2} + 1\right) \operatorname{atan}{\left (x \right )}} - \frac{6}{x^{4}} \log{\left (\operatorname{atan}{\left (x \right )} \right )}\right) \operatorname{atan}^{\frac{1}{x}}{\left (x \right )}$$