3
-12*x
-------------
__________
/ 8
\/ 1 - 9*x
$$- \frac{12 x^{3}}{\sqrt{- 9 x^{8} + 1}}$$
/ 8 \
2 | 12*x |
-36*x *|1 + --------|
| 8|
\ 1 - 9*x /
---------------------
__________
/ 8
\/ 1 - 9*x
$$- \frac{36 x^{2} \cdot \left(\frac{12 x^{8}}{- 9 x^{8} + 1} + 1\right)}{\sqrt{- 9 x^{8} + 1}}$$
/ 8 16 \
| 78*x 648*x |
-72*x*|1 + -------- + -----------|
| 8 2|
| 1 - 9*x / 8\ |
\ \1 - 9*x / /
----------------------------------
__________
/ 8
\/ 1 - 9*x
$$- \frac{72 x \left(\frac{648 x^{16}}{\left(- 9 x^{8} + 1\right)^{2}} + \frac{78 x^{8}}{- 9 x^{8} + 1} + 1\right)}{\sqrt{- 9 x^{8} + 1}}$$