3*x
- ------------- + acos(3*x)
__________
/ 2
\/ 1 - 9*x
$$- \frac{3 x}{\sqrt{- 9 x^{2} + 1}} + \operatorname{acos}{\left (3 x \right )}$$
/ 2 \
| 9*x |
-3*|2 + --------|
| 2|
\ 1 - 9*x /
-----------------
__________
/ 2
\/ 1 - 9*x
$$- \frac{\frac{27 x^{2}}{- 9 x^{2} + 1} + 6}{\sqrt{- 9 x^{2} + 1}}$$
/ 2 \
| 27*x |
-27*x*|4 + --------|
| 2|
\ 1 - 9*x /
--------------------
3/2
/ 2\
\1 - 9*x /
$$- \frac{27 x \left(\frac{27 x^{2}}{- 9 x^{2} + 1} + 4\right)}{\left(- 9 x^{2} + 1\right)^{\frac{3}{2}}}$$