/ 2 \
| / 1 \ / 1\|
| |1 - --| *|-1 + x + -||
| | 2| \ x/|
|1 \ x / |
2*|-- - ----------------------|
| 3 2 |
|x / 1\ |
| 1 + |-1 + x + -| |
\ \ x/ /
-------------------------------
2
/ 1\
1 + |-1 + x + -|
\ x/
$$\frac{2 \left(- \frac{\left(1 - \frac{1}{x^{2}}\right)^{2} \left(x - 1 + \frac{1}{x}\right)}{\left(x - 1 + \frac{1}{x}\right)^{2} + 1} + \frac{1}{x^{3}}\right)}{\left(x - 1 + \frac{1}{x}\right)^{2} + 1}$$
/ 3 3 2 \
| / 1 \ / 1 \ / 1\ / 1 \ / 1\|
| |1 - --| 4*|1 - --| *|-1 + x + -| 6*|1 - --|*|-1 + x + -||
| | 2| | 2| \ x/ | 2| \ x/|
| 3 \ x / \ x / \ x / |
2*|- -- - ----------------- + ------------------------- - -----------------------|
| 4 2 2 / 2\|
| x / 1\ / 2\ 3 | / 1\ ||
| 1 + |-1 + x + -| | / 1\ | x *|1 + |-1 + x + -| ||
| \ x/ |1 + |-1 + x + -| | \ \ x/ /|
\ \ \ x/ / /
----------------------------------------------------------------------------------
2
/ 1\
1 + |-1 + x + -|
\ x/
$$\frac{2 \left(- \frac{\left(1 - \frac{1}{x^{2}}\right)^{3}}{\left(x - 1 + \frac{1}{x}\right)^{2} + 1} + \frac{4 \left(1 - \frac{1}{x^{2}}\right)^{3} \left(x - 1 + \frac{1}{x}\right)^{2}}{\left(\left(x - 1 + \frac{1}{x}\right)^{2} + 1\right)^{2}} - \frac{6 \left(1 - \frac{1}{x^{2}}\right) \left(x - 1 + \frac{1}{x}\right)}{x^{3} \left(\left(x - 1 + \frac{1}{x}\right)^{2} + 1\right)} - \frac{3}{x^{4}}\right)}{\left(x - 1 + \frac{1}{x}\right)^{2} + 1}$$