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