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