________
/ 2\ / 2
x*acos\x / 2*x*\/ 1 - x
- ----------- - ---------------
________ ________
/ 2 / 4
\/ 1 - x \/ 1 - x
$$- \frac{2 x \sqrt{- x^{2} + 1}}{\sqrt{- x^{4} + 1}} - \frac{x \operatorname{acos}{\left(x^{2} \right)}}{\sqrt{- x^{2} + 1}}$$
/ 2 \ ________ / 4 \
| x | / 2\ / 2 | 2*x |
|-1 + -------|*acos\x / 2*\/ 1 - x *|-1 + -------|
| 2| | 4| 2
\ -1 + x / \ -1 + x / 4*x
----------------------- + ---------------------------- + -----------------------
________ ________ ________ ________
/ 2 / 4 / 2 / 4
\/ 1 - x \/ 1 - x \/ 1 - x *\/ 1 - x
$$\frac{2 \sqrt{- x^{2} + 1} \cdot \left(\frac{2 x^{4}}{x^{4} - 1} - 1\right)}{\sqrt{- x^{4} + 1}} + \frac{\left(\frac{x^{2}}{x^{2} - 1} - 1\right) \operatorname{acos}{\left(x^{2} \right)}}{\sqrt{- x^{2} + 1}} + \frac{4 x^{2}}{\sqrt{- x^{2} + 1} \sqrt{- x^{4} + 1}}$$
/ / 2 \ / 4 \ / 2 \ ________ / 4 \\
| | x | | 2*x | | x | / 2\ 2 / 2 | 6*x ||
| 6*|-1 + -------| 6*|-1 + -------| 3*|-1 + -------|*acos\x / 4*x *\/ 1 - x *|-5 + -------||
| | 2| | 4| | 2| | 4||
| \ -1 + x / \ -1 + x / \ -1 + x / \ -1 + x /|
x*|- ----------------------- - ----------------------- + ------------------------- + -------------------------------|
| ________ ________ ________ ________ 3/2 3/2 |
| / 2 / 4 / 2 / 4 / 2\ / 4\ |
\ \/ 1 - x *\/ 1 - x \/ 1 - x *\/ 1 - x \1 - x / \1 - x / /
$$x \left(\frac{4 x^{2} \sqrt{- x^{2} + 1} \cdot \left(\frac{6 x^{4}}{x^{4} - 1} - 5\right)}{\left(- x^{4} + 1\right)^{\frac{3}{2}}} - \frac{6 \left(\frac{x^{2}}{x^{2} - 1} - 1\right)}{\sqrt{- x^{2} + 1} \sqrt{- x^{4} + 1}} - \frac{6 \cdot \left(\frac{2 x^{4}}{x^{4} - 1} - 1\right)}{\sqrt{- x^{2} + 1} \sqrt{- x^{4} + 1}} + \frac{3 \left(\frac{x^{2}}{x^{2} - 1} - 1\right) \operatorname{acos}{\left(x^{2} \right)}}{\left(- x^{2} + 1\right)^{\frac{3}{2}}}\right)$$