6
--------------
___________
/ 2
\/ 1 - 36*x
$$\frac{6}{\sqrt{- 36 x^{2} + 1}}$$
216*x
--------------
3/2
/ 2\
\1 - 36*x /
$$\frac{216 x}{\left(- 36 x^{2} + 1\right)^{\frac{3}{2}}}$$
/ 2 \
| 108*x |
216*|1 + ---------|
| 2|
\ 1 - 36*x /
-------------------
3/2
/ 2\
\1 - 36*x /
$$\frac{\frac{23328 x^{2}}{- 36 x^{2} + 1} + 216}{\left(- 36 x^{2} + 1\right)^{\frac{3}{2}}}$$