/ 2 \ / 2\ 6*x*cot(3*x)
\-3 - 3*cot (3*x)/*acos\3*x / - -------------
__________
/ 4
\/ 1 - 9*x
$$\left(- 3 \cot^{2}{\left(3 x \right)} - 3\right) \operatorname{acos}{\left(3 x^{2} \right)} - \frac{6 x \cot{\left(3 x \right)}}{\sqrt{- 9 x^{4} + 1}}$$
// 4 \ \
|| 18*x | |
||-1 + ---------|*cot(3*x) |
|| 4| / 2 \|
|\ -1 + 9*x / / 2 \ / 2\ 6*x*\1 + cot (3*x)/|
6*|------------------------- + 3*\1 + cot (3*x)/*acos\3*x /*cot(3*x) + -------------------|
| __________ __________ |
| / 4 / 4 |
\ \/ 1 - 9*x \/ 1 - 9*x /
$$6 \cdot \left(3 \left(\cot^{2}{\left(3 x \right)} + 1\right) \cot{\left(3 x \right)} \operatorname{acos}{\left(3 x^{2} \right)} + \frac{6 x \left(\cot^{2}{\left(3 x \right)} + 1\right)}{\sqrt{- 9 x^{4} + 1}} + \frac{\left(\frac{18 x^{4}}{9 x^{4} - 1} - 1\right) \cot{\left(3 x \right)}}{\sqrt{- 9 x^{4} + 1}}\right)$$
/ / 4 \ / 4 \ \
| / 2 \ | 18*x | 3 | 54*x | |
| \1 + cot (3*x)/*|-1 + ---------| 2*x *|-5 + ---------|*cot(3*x)|
| | 4| / 2 \ | 4| |
| \ -1 + 9*x / / 2 \ / 2 \ / 2\ 6*x*\1 + cot (3*x)/*cot(3*x) \ -1 + 9*x / |
54*|- -------------------------------- - \1 + cot (3*x)/*\1 + 3*cot (3*x)/*acos\3*x / - ---------------------------- + ------------------------------|
| __________ __________ 3/2 |
| / 4 / 4 / 4\ |
\ \/ 1 - 9*x \/ 1 - 9*x \1 - 9*x / /
$$54 \cdot \left(- \left(\cot^{2}{\left(3 x \right)} + 1\right) \left(3 \cot^{2}{\left(3 x \right)} + 1\right) \operatorname{acos}{\left(3 x^{2} \right)} + \frac{2 x^{3} \cdot \left(\frac{54 x^{4}}{9 x^{4} - 1} - 5\right) \cot{\left(3 x \right)}}{\left(- 9 x^{4} + 1\right)^{\frac{3}{2}}} - \frac{6 x \left(\cot^{2}{\left(3 x \right)} + 1\right) \cot{\left(3 x \right)}}{\sqrt{- 9 x^{4} + 1}} - \frac{\left(\frac{18 x^{4}}{9 x^{4} - 1} - 1\right) \left(\cot^{2}{\left(3 x \right)} + 1\right)}{\sqrt{- 9 x^{4} + 1}}\right)$$