/ 2 2 2 \
x2 | 2 asin (3*x) 18*x*asin(3*x) 27*x *asin (3*x)|
81*5 *|------------- + ------------- + -------------- + ----------------|
| 3/2 3/2 2 5/2 |
|/ 2\ / 2\ / 2\ / 2\ |
\\1 - 9*x / \1 - 9*x / \-1 + 9*x / \1 - 9*x / /
$$81 \cdot 5^{x_{2}} \left(\frac{27 x^{2} \operatorname{asin}^{2}{\left(3 x \right)}}{\left(1 - 9 x^{2}\right)^{\frac{5}{2}}} + \frac{18 x \operatorname{asin}{\left(3 x \right)}}{\left(9 x^{2} - 1\right)^{2}} + \frac{\operatorname{asin}^{2}{\left(3 x \right)}}{\left(1 - 9 x^{2}\right)^{\frac{3}{2}}} + \frac{2}{\left(1 - 9 x^{2}\right)^{\frac{3}{2}}}\right)$$