1 2*atan(x)
----------- - ---------
2 / 2\ 3
x *\1 + x / x
$$\frac{1}{x^{2} \left(x^{2} + 1\right)} - \frac{2}{x^{3}} \operatorname{atan}{\left (x \right )}$$
/ 1 2 3*atan(x)\
2*|- --------- - ----------- + ---------|
| 2 2 / 2\ 3 |
| / 2\ x *\1 + x / x |
\ \1 + x / /
-----------------------------------------
x
$$\frac{1}{x} \left(- \frac{2}{\left(x^{2} + 1\right)^{2}} - \frac{4}{x^{2} \left(x^{2} + 1\right)} + \frac{6}{x^{3}} \operatorname{atan}{\left (x \right )}\right)$$
/ 4 12*atan(x) 5 9 \
2*|--------- - ---------- + ------------ + -----------|
| 3 5 2 4 / 2\|
|/ 2\ x 2 / 2\ x *\1 + x /|
\\1 + x / x *\1 + x / /
$$2 \left(\frac{4}{\left(x^{2} + 1\right)^{3}} + \frac{5}{x^{2} \left(x^{2} + 1\right)^{2}} + \frac{9}{x^{4} \left(x^{2} + 1\right)} - \frac{12}{x^{5}} \operatorname{atan}{\left (x \right )}\right)$$