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