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