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