/ 2 \
5 | / 1 \ x*(x - acot(x))|
14*(x - acot(x)) *|3*|1 + ------| - ---------------|
| | 2| 2 |
| \ 1 + x / / 2\ |
\ \1 + x / /
$$14 \left(x - \operatorname{acot}{\left (x \right )}\right)^{5} \left(- \frac{x}{\left(x^{2} + 1\right)^{2}} \left(x - \operatorname{acot}{\left (x \right )}\right) + 3 \left(1 + \frac{1}{x^{2} + 1}\right)^{2}\right)$$
/ / 1 \ \
| 18*x*|1 + ------|*(x - acot(x))|
| 3 2 2 2 | 2| |
4 | / 1 \ (x - acot(x)) 4*x *(x - acot(x)) \ 1 + x / |
14*(x - acot(x)) *|15*|1 + ------| - -------------- + ------------------- - -------------------------------|
| | 2| 2 3 2 |
| \ 1 + x / / 2\ / 2\ / 2\ |
\ \1 + x / \1 + x / \1 + x / /
$$14 \left(x - \operatorname{acot}{\left (x \right )}\right)^{4} \left(\frac{4 x^{2}}{\left(x^{2} + 1\right)^{3}} \left(x - \operatorname{acot}{\left (x \right )}\right)^{2} - \frac{18 x}{\left(x^{2} + 1\right)^{2}} \left(1 + \frac{1}{x^{2} + 1}\right) \left(x - \operatorname{acot}{\left (x \right )}\right) + 15 \left(1 + \frac{1}{x^{2} + 1}\right)^{3} - \frac{\left(x - \operatorname{acot}{\left (x \right )}\right)^{2}}{\left(x^{2} + 1\right)^{2}}\right)$$