The third derivative
[src]
/ 2 2 2 \
| 2 asin (x) 3*x *asin (x) 6*x*asin(x)|
3*|----------- + ----------- + ------------- + -----------|
| 3/2 3/2 5/2 2|
|/ 2\ / 2\ / 2\ / 2\ |
\\1 - x / \1 - x / \1 - x / \-1 + x / /
$$3 \left(\frac{3 x^{2} \operatorname{asin}^{2}{\left(x \right)}}{\left(1 - x^{2}\right)^{\frac{5}{2}}} + \frac{6 x \operatorname{asin}{\left(x \right)}}{\left(x^{2} - 1\right)^{2}} + \frac{\operatorname{asin}^{2}{\left(x \right)}}{\left(1 - x^{2}\right)^{\frac{3}{2}}} + \frac{2}{\left(1 - x^{2}\right)^{\frac{3}{2}}}\right)$$