/ 2 2 2 \
2 | 12 asin (3*x) 27*x *asin (3*x) 36*x*asin(3*x)|
135*asin (3*x)*|------------- + ------------- + ---------------- + --------------|
| 3/2 3/2 5/2 2 |
|/ 2\ / 2\ / 2\ / 2\ |
\\1 - 9*x / \1 - 9*x / \1 - 9*x / \-1 + 9*x / /
$$135 \left(\frac{27 x^{2} \operatorname{asin}^{2}{\left (3 x \right )}}{\left(- 9 x^{2} + 1\right)^{\frac{5}{2}}} + \frac{36 x \operatorname{asin}{\left (3 x \right )}}{\left(9 x^{2} - 1\right)^{2}} + \frac{\operatorname{asin}^{2}{\left (3 x \right )}}{\left(- 9 x^{2} + 1\right)^{\frac{3}{2}}} + \frac{12}{\left(- 9 x^{2} + 1\right)^{\frac{3}{2}}}\right) \operatorname{asin}^{2}{\left (3 x \right )}$$