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