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