1 2
- ----------- + ------
________ 2
/ 2 1 + x
\/ 1 - x $$\frac{2}{x^{2} + 1} - \frac{1}{\sqrt{- x^{2} + 1}}$$
/ 1 4 \
-x*|----------- + ---------|
| 3/2 2|
|/ 2\ / 2\ |
\\1 - x / \1 + x / /
$$- x \left(\frac{4}{\left(x^{2} + 1\right)^{2}} + \frac{1}{\left(- x^{2} + 1\right)^{\frac{3}{2}}}\right)$$
2 2
1 4 3*x 16*x
- ----------- - --------- - ----------- + ---------
3/2 2 5/2 3
/ 2\ / 2\ / 2\ / 2\
\1 - x / \1 + x / \1 - x / \1 + x / $$\frac{16 x^{2}}{\left(x^{2} + 1\right)^{3}} - \frac{3 x^{2}}{\left(- x^{2} + 1\right)^{\frac{5}{2}}} - \frac{4}{\left(x^{2} + 1\right)^{2}} - \frac{1}{\left(- x^{2} + 1\right)^{\frac{3}{2}}}$$