acos(3*x)
-3*e
-------------
__________
/ 2
\/ 1 - 9*x
$$- \frac{3 e^{\operatorname{acos}{\left (3 x \right )}}}{\sqrt{- 9 x^{2} + 1}}$$
/ 1 3*x \ acos(3*x)
-9*|--------- + -------------|*e
| 2 3/2|
|-1 + 9*x / 2\ |
\ \1 - 9*x / /
$$- 9 \left(\frac{3 x}{\left(- 9 x^{2} + 1\right)^{\frac{3}{2}}} + \frac{1}{9 x^{2} - 1}\right) e^{\operatorname{acos}{\left (3 x \right )}}$$
/ 2 \
| 2 27*x 9*x | acos(3*x)
27*|- ------------- - ------------- + ------------|*e
| 3/2 5/2 2|
| / 2\ / 2\ / 2\ |
\ \1 - 9*x / \1 - 9*x / \-1 + 9*x / /
$$27 \left(- \frac{27 x^{2}}{\left(- 9 x^{2} + 1\right)^{\frac{5}{2}}} + \frac{9 x}{\left(9 x^{2} - 1\right)^{2}} - \frac{2}{\left(- 9 x^{2} + 1\right)^{\frac{3}{2}}}\right) e^{\operatorname{acos}{\left (3 x \right )}}$$