The first derivative
[src]
-6*x
-------------
__________
/ 4
\/ 1 - 9*x
$$- \frac{6 x}{\sqrt{- 9 x^{4} + 1}}$$
The second derivative
[src]
/ 4 \
| 18*x |
-6*|1 + --------|
| 4|
\ 1 - 9*x /
-----------------
__________
/ 4
\/ 1 - 9*x
$$- \frac{6 \cdot \left(\frac{18 x^{4}}{- 9 x^{4} + 1} + 1\right)}{\sqrt{- 9 x^{4} + 1}}$$
The third derivative
[src]
/ 4 \
3 | 54*x |
-108*x *|5 + --------|
| 4|
\ 1 - 9*x /
----------------------
3/2
/ 4\
\1 - 9*x /
$$- \frac{108 x^{3} \cdot \left(\frac{54 x^{4}}{- 9 x^{4} + 1} + 5\right)}{\left(- 9 x^{4} + 1\right)^{\frac{3}{2}}}$$