3
x 3*e
- ------ - ---- + acot(x)
2 4
1 + x x
$$- \frac{x}{x^{2} + 1} + \operatorname{acot}{\left(x \right)} - \frac{3 e^{3}}{x^{4}}$$
/ 2 3\
| 1 x 6*e |
2*|- ------ + --------- + ----|
| 2 2 5 |
| 1 + x / 2\ x |
\ \1 + x / /
$$2 \left(\frac{x^{2}}{\left(x^{2} + 1\right)^{2}} - \frac{1}{x^{2} + 1} + \frac{6 e^{3}}{x^{5}}\right)$$
/ 3 3 \
| 15*e 2*x 2*x |
4*|- ----- - --------- + ---------|
| 6 3 2|
| x / 2\ / 2\ |
\ \1 + x / \1 + x / /
$$4 \left(- \frac{2 x^{3}}{\left(x^{2} + 1\right)^{3}} + \frac{2 x}{\left(x^{2} + 1\right)^{2}} - \frac{15 e^{3}}{x^{6}}\right)$$