/ / 2 / 2\\ \
| | 4*x *\-1 + x /| / 3\|
| |-1 + --------------|*\5 + 2*x /|
| | 2| |
| 3 | / 2\ | |
| / 2\ 12*x \ 1 + \-1 + x / / |
2*|6*x*atan\-1 + x / + -------------- - --------------------------------|
| 2 2 |
| / 2\ / 2\ |
\ 1 + \-1 + x / 1 + \-1 + x / /
$$2 \left(\frac{12 x^{3}}{\left(x^{2} - 1\right)^{2} + 1} + 6 x \operatorname{atan}{\left(x^{2} - 1 \right)} - \frac{\left(2 x^{3} + 5\right) \left(\frac{4 x^{2} \left(x^{2} - 1\right)}{\left(x^{2} - 1\right)^{2} + 1} - 1\right)}{\left(x^{2} - 1\right)^{2} + 1}\right)$$
/ / 2\\
| / 2 / 2\\ | 2 / 2\ ||
| 2 | 4*x *\-1 + x /| / 3\ | 2 8*x *\-1 + x / ||
| 9*x *|-1 + --------------| 2*x*\5 + 2*x /*|3 - 5*x + ---------------||
| | 2| | 2||
| 2 | / 2\ | | / 2\ ||
| / 2\ 18*x \ 1 + \-1 + x / / \ 1 + \-1 + x / /|
4*|3*atan\-1 + x / + -------------- - -------------------------- + -------------------------------------------|
| 2 2 2 |
| / 2\ / 2\ / 2\ |
| 1 + \-1 + x / 1 + \-1 + x / | / 2\ | |
\ \1 + \-1 + x / / /
$$4 \left(- \frac{9 x^{2} \left(\frac{4 x^{2} \left(x^{2} - 1\right)}{\left(x^{2} - 1\right)^{2} + 1} - 1\right)}{\left(x^{2} - 1\right)^{2} + 1} + \frac{18 x^{2}}{\left(x^{2} - 1\right)^{2} + 1} + \frac{2 x \left(2 x^{3} + 5\right) \left(\frac{8 x^{2} \left(x^{2} - 1\right)^{2}}{\left(x^{2} - 1\right)^{2} + 1} - 5 x^{2} + 3\right)}{\left(\left(x^{2} - 1\right)^{2} + 1\right)^{2}} + 3 \operatorname{atan}{\left(x^{2} - 1 \right)}\right)$$