/ 2 x*atan(x) 2*x*acos(x)\
-|-------------------- + ----------- + -----------|
| ________ 3/2 2 |
|/ 2\ / 2 / 2\ / 2\ |
\\1 + x /*\/ 1 - x \1 - x / \1 + x / /
----------------------------------------------------
pi
$$- \frac{\frac{2 x \operatorname{acos}{\left(x \right)}}{\left(x^{2} + 1\right)^{2}} + \frac{x \operatorname{atan}{\left(x \right)}}{\left(1 - x^{2}\right)^{\frac{3}{2}}} + \frac{2}{\sqrt{1 - x^{2}} \left(x^{2} + 1\right)}}{\pi}$$
/ 2 \ / 2 \
| 3*x | | 4*x |
|-1 + -------|*atan(x) 2*|-1 + ------|*acos(x)
| 2| | 2|
\ -1 + x / 3*x \ 1 + x / 6*x
---------------------- - -------------------- + ----------------------- + ---------------------
3/2 3/2 2 2 ________
/ 2\ / 2\ / 2\ / 2\ / 2\ / 2
\1 - x / \1 + x /*\1 - x / \1 + x / \1 + x / *\/ 1 - x
-----------------------------------------------------------------------------------------------
pi
$$\frac{\frac{6 x}{\sqrt{1 - x^{2}} \left(x^{2} + 1\right)^{2}} - \frac{3 x}{\left(1 - x^{2}\right)^{\frac{3}{2}} \left(x^{2} + 1\right)} + \frac{2 \left(\frac{4 x^{2}}{x^{2} + 1} - 1\right) \operatorname{acos}{\left(x \right)}}{\left(x^{2} + 1\right)^{2}} + \frac{\left(\frac{3 x^{2}}{x^{2} - 1} - 1\right) \operatorname{atan}{\left(x \right)}}{\left(1 - x^{2}\right)^{\frac{3}{2}}}}{\pi}$$