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