x7
-----------
________
/ 2
\/ 1 - x
$$\frac{x_{7}}{\sqrt{1 - x^{2}}}$$
x7*x
-----------
3/2
/ 2\
\1 - x /
$$\frac{x x_{7}}{\left(1 - x^{2}\right)^{\frac{3}{2}}}$$
/ 2 \
| 3*x |
-x7*|-1 + -------|
| 2|
\ -1 + x /
-------------------
3/2
/ 2\
\1 - x /
$$- \frac{x_{7} \cdot \left(\frac{3 x^{2}}{x^{2} - 1} - 1\right)}{\left(1 - x^{2}\right)^{\frac{3}{2}}}$$