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