2 / 2*acos(3*x) / 1 x*acos(3*x) \\
-12*acos (3*x)*|------------- + 9*(1 + x)*|--------- + -------------||
| __________ | 2 3/2||
| / 2 |-1 + 9*x / 2\ ||
\\/ 1 - 9*x \ \1 - 9*x / //
$$- 12 \left(9 \left(x + 1\right) \left(\frac{x \operatorname{acos}{\left(3 x \right)}}{\left(1 - 9 x^{2}\right)^{\frac{3}{2}}} + \frac{1}{9 x^{2} - 1}\right) + \frac{2 \operatorname{acos}{\left(3 x \right)}}{\sqrt{1 - 9 x^{2}}}\right) \operatorname{acos}^{2}{\left(3 x \right)}$$
/ / 2 2 2 \ \
| | 6 acos (3*x) 27*x*acos(3*x) 27*x *acos (3*x)| / 1 x*acos(3*x) \ |
-108*|(1 + x)*|------------- + ------------- - -------------- + ----------------| + 3*|--------- + -------------|*acos(3*x)|*acos(3*x)
| | 3/2 3/2 2 5/2 | | 2 3/2| |
| |/ 2\ / 2\ / 2\ / 2\ | |-1 + 9*x / 2\ | |
\ \\1 - 9*x / \1 - 9*x / \-1 + 9*x / \1 - 9*x / / \ \1 - 9*x / / /
$$- 108 \left(\left(x + 1\right) \left(\frac{27 x^{2} \operatorname{acos}^{2}{\left(3 x \right)}}{\left(1 - 9 x^{2}\right)^{\frac{5}{2}}} - \frac{27 x \operatorname{acos}{\left(3 x \right)}}{\left(9 x^{2} - 1\right)^{2}} + \frac{\operatorname{acos}^{2}{\left(3 x \right)}}{\left(1 - 9 x^{2}\right)^{\frac{3}{2}}} + \frac{6}{\left(1 - 9 x^{2}\right)^{\frac{3}{2}}}\right) + 3 \left(\frac{x \operatorname{acos}{\left(3 x \right)}}{\left(1 - 9 x^{2}\right)^{\frac{3}{2}}} + \frac{1}{9 x^{2} - 1}\right) \operatorname{acos}{\left(3 x \right)}\right) \operatorname{acos}{\left(3 x \right)}$$