-2*x
-----------------------
_______________
/ 2
/ / 2\
/ \1 - x /
3* / 1 - ---------
\/ 9
$$- \frac{2 x}{3 \sqrt{- \frac{\left(- x^{2} + 1\right)^{2}}{9} + 1}}$$
/ 2 / 2\\
| 2*x *\-1 + x /|
-2*|9 + --------------|
| 2 |
| / 2\ |
| \1 - x / |
| 1 - --------- |
\ 9 /
------------------------
_______________
/ 2
/ / 2\
/ \1 - x /
27* / 1 - ---------
\/ 9
$$- \frac{2 \cdot \left(\frac{2 x^{2} \left(x^{2} - 1\right)}{- \frac{\left(- x^{2} + 1\right)^{2}}{9} + 1} + 9\right)}{27 \sqrt{- \frac{\left(- x^{2} + 1\right)^{2}}{9} + 1}}$$
/ 2\
| 2 / 2\ |
| 2 2*x *\-1 + x / |
-4*x*|-9 + 15*x + ---------------|
| 2 |
| / 2\ |
| \1 - x / |
| 1 - --------- |
\ 9 /
-----------------------------------
3/2
/ 2\
| / 2\ |
| \1 - x / |
81*|1 - ---------|
\ 9 /
$$- \frac{4 x \left(\frac{2 x^{2} \left(x^{2} - 1\right)^{2}}{- \frac{\left(- x^{2} + 1\right)^{2}}{9} + 1} + 15 x^{2} - 9\right)}{81 \left(- \frac{\left(- x^{2} + 1\right)^{2}}{9} + 1\right)^{\frac{3}{2}}}$$