/ 2 2 2 \
21 | 506 acos (x) 3*x *acos (x) 69*x*acos(x)|
24*acos (x)*|- ----------- - ----------- - ------------- + ------------|
| 3/2 3/2 5/2 2 |
| / 2\ / 2\ / 2\ / 2\ |
\ \1 - x / \1 - x / \1 - x / \-1 + x / /$$24 \left(- \frac{3 x^{2} \operatorname{acos}^{2}{\left (x \right )}}{\left(- x^{2} + 1\right)^{\frac{5}{2}}} + \frac{69 x \operatorname{acos}{\left (x \right )}}{\left(x^{2} - 1\right)^{2}} - \frac{\operatorname{acos}^{2}{\left (x \right )}}{\left(- x^{2} + 1\right)^{\frac{3}{2}}} - \frac{506}{\left(- x^{2} + 1\right)^{\frac{3}{2}}}\right) \operatorname{acos}^{21}{\left (x \right )}$$