The third derivative
[src]
/ 2 2 2 \
| 2 asin (2*x) 12*x*asin(2*x) 12*x *asin (2*x)|
24*|------------- + ------------- + -------------- + ----------------|
| 3/2 3/2 2 5/2 |
|/ 2\ / 2\ / 2\ / 2\ |
\\1 - 4*x / \1 - 4*x / \-1 + 4*x / \1 - 4*x / /
$$24 \left(\frac{12 x^{2} \operatorname{asin}^{2}{\left(2 x \right)}}{\left(1 - 4 x^{2}\right)^{\frac{5}{2}}} + \frac{12 x \operatorname{asin}{\left(2 x \right)}}{\left(4 x^{2} - 1\right)^{2}} + \frac{\operatorname{asin}^{2}{\left(2 x \right)}}{\left(1 - 4 x^{2}\right)^{\frac{3}{2}}} + \frac{2}{\left(1 - 4 x^{2}\right)^{\frac{3}{2}}}\right)$$