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