3
2 x 2
3*x - ------ + 3*x *acot(x)
2
1 + x
$$- \frac{x^{3}}{x^{2} + 1} + 3 x^{2} \operatorname{acot}{\left(x \right)} + 3 x^{2}$$
/ 3 \
| x 3*x |
2*x*|3 + 3*acot(x) + --------- - ------|
| 2 2|
| / 2\ 1 + x |
\ \1 + x / /
$$2 x \left(\frac{x^{3}}{\left(x^{2} + 1\right)^{2}} - \frac{3 x}{x^{2} + 1} + 3 \operatorname{acot}{\left(x \right)} + 3\right)$$
/ 5 3 \
| 9*x 4*x 10*x |
2*|3 + 3*acot(x) - ------ - --------- + ---------|
| 2 3 2|
| 1 + x / 2\ / 2\ |
\ \1 + x / \1 + x / /
$$2 \left(- \frac{4 x^{5}}{\left(x^{2} + 1\right)^{3}} + \frac{10 x^{3}}{\left(x^{2} + 1\right)^{2}} - \frac{9 x}{x^{2} + 1} + 3 \operatorname{acot}{\left(x \right)} + 3\right)$$