/ 4 \
| 1 9 2*x 54*x*atan(3*x)|
2*|- ----------- + ----------- - ----------- - --------------|
| ________ 2 3/2 2 |
| / 4 / 2\ / 4\ / 2\ |
\ \/ 1 - x \1 + 9*x / \1 - x / \1 + 9*x / /
$$2 \left(- \frac{2 x^{4}}{\left(1 - x^{4}\right)^{\frac{3}{2}}} - \frac{54 x \operatorname{atan}{\left(3 x \right)}}{\left(9 x^{2} + 1\right)^{2}} + \frac{9}{\left(9 x^{2} + 1\right)^{2}} - \frac{1}{\sqrt{1 - x^{4}}}\right)$$
/ 7 3 2 \
| 243*x 27*atan(3*x) 6*x 5*x 972*x *atan(3*x)|
4*|- ----------- - ------------ - ----------- - ----------- + ----------------|
| 3 2 5/2 3/2 3 |
| / 2\ / 2\ / 4\ / 4\ / 2\ |
\ \1 + 9*x / \1 + 9*x / \1 - x / \1 - x / \1 + 9*x / /
$$4 \left(- \frac{6 x^{7}}{\left(1 - x^{4}\right)^{\frac{5}{2}}} - \frac{5 x^{3}}{\left(1 - x^{4}\right)^{\frac{3}{2}}} + \frac{972 x^{2} \operatorname{atan}{\left(3 x \right)}}{\left(9 x^{2} + 1\right)^{3}} - \frac{243 x}{\left(9 x^{2} + 1\right)^{3}} - \frac{27 \operatorname{atan}{\left(3 x \right)}}{\left(9 x^{2} + 1\right)^{2}}\right)$$