/ / 1 x*acos(x) \ 2*acos(x) \
-2*|x*|------- + -----------| + -----------|
| | 2 3/2| ________|
| |-1 + x / 2\ | / 2 |
\ \ \1 - x / / \/ 1 - x /
$$- 2 \left(x \left(\frac{x \operatorname{acos}{\left(x \right)}}{\left(1 - x^{2}\right)^{\frac{3}{2}}} + \frac{1}{x^{2} - 1}\right) + \frac{2 \operatorname{acos}{\left(x \right)}}{\sqrt{1 - x^{2}}}\right)$$
/ / 2 \ \
| 3 | acos(x) 3*x 3*x *acos(x)| 3*x*acos(x)|
-2*|------- + x*|----------- - ---------- + ------------| + -----------|
| 2 | 3/2 2 5/2 | 3/2|
|-1 + x |/ 2\ / 2\ / 2\ | / 2\ |
\ \\1 - x / \-1 + x / \1 - x / / \1 - x / /
$$- 2 \left(x \left(\frac{3 x^{2} \operatorname{acos}{\left(x \right)}}{\left(1 - x^{2}\right)^{\frac{5}{2}}} - \frac{3 x}{\left(x^{2} - 1\right)^{2}} + \frac{\operatorname{acos}{\left(x \right)}}{\left(1 - x^{2}\right)^{\frac{3}{2}}}\right) + \frac{3 x \operatorname{acos}{\left(x \right)}}{\left(1 - x^{2}\right)^{\frac{3}{2}}} + \frac{3}{x^{2} - 1}\right)$$