/ 2 x*x\
___________________ |x + 2*x + ---|*acos(3*x)
3*\/ x*x*x + 2*x*x + 4 \ 2 /
- ----------------------- + --------------------------
__________ ___________________
/ 2 \/ x*x*x + 2*x*x + 4
\/ 1 - 9*x
$$\frac{\left(x^{2} + \frac{x x}{2} + 2 x\right) \operatorname{acos}{\left(3 x \right)}}{\sqrt{\left(x 2 x + x x x\right) + 4}} - \frac{3 \sqrt{\left(x 2 x + x x x\right) + 4}}{\sqrt{1 - 9 x^{2}}}$$
/ 2 2\
| x *(4 + 3*x) |
_______________ |8 + 12*x - -------------|*acos(3*x)
/ 3 2 | 3 2|
27*x*\/ 4 + x + 2*x \ 4 + x + 2*x / 3*x*(4 + 3*x)
- ----------------------- + ------------------------------------ - --------------------------------
3/2 _______________ __________ _______________
/ 2\ / 3 2 / 2 / 3 2
\1 - 9*x / 4*\/ 4 + x + 2*x \/ 1 - 9*x *\/ 4 + x + 2*x
$$- \frac{3 x \left(3 x + 4\right)}{\sqrt{1 - 9 x^{2}} \sqrt{x^{3} + 2 x^{2} + 4}} - \frac{27 x \sqrt{x^{3} + 2 x^{2} + 4}}{\left(1 - 9 x^{2}\right)^{\frac{3}{2}}} + \frac{\left(- \frac{x^{2} \left(3 x + 4\right)^{2}}{x^{3} + 2 x^{2} + 4} + 12 x + 8\right) \operatorname{acos}{\left(3 x \right)}}{4 \sqrt{x^{3} + 2 x^{2} + 4}}$$
/ / 3 3 \ \
| _______________ / 2 \ / 2 2\ | x *(4 + 3*x) 4*x*(2 + 3*x)*(4 + 3*x)| |
| / 3 2 | 27*x | | x *(4 + 3*x) | |8 + ---------------- - -----------------------|*acos(3*x) |
|9*\/ 4 + x + 2*x *|-1 + ---------| 3*|8 + 12*x - -------------| | 2 3 2 | |
| | 2| | 3 2| | / 3 2\ 4 + x + 2*x | 2 |
| \ -1 + 9*x / \ 4 + x + 2*x / \ \4 + x + 2*x / / 27*x *(4 + 3*x) |
3*|------------------------------------- - ---------------------------------- + ---------------------------------------------------------- - ----------------------------------|
| 3/2 __________ _______________ _______________ 3/2 _______________|
| / 2\ / 2 / 3 2 / 3 2 / 2\ / 3 2 |
\ \1 - 9*x / 4*\/ 1 - 9*x *\/ 4 + x + 2*x 8*\/ 4 + x + 2*x 2*\1 - 9*x / *\/ 4 + x + 2*x /
$$3 \left(- \frac{27 x^{2} \left(3 x + 4\right)}{2 \left(1 - 9 x^{2}\right)^{\frac{3}{2}} \sqrt{x^{3} + 2 x^{2} + 4}} + \frac{\left(\frac{x^{3} \left(3 x + 4\right)^{3}}{\left(x^{3} + 2 x^{2} + 4\right)^{2}} - \frac{4 x \left(3 x + 2\right) \left(3 x + 4\right)}{x^{3} + 2 x^{2} + 4} + 8\right) \operatorname{acos}{\left(3 x \right)}}{8 \sqrt{x^{3} + 2 x^{2} + 4}} - \frac{3 \left(- \frac{x^{2} \left(3 x + 4\right)^{2}}{x^{3} + 2 x^{2} + 4} + 12 x + 8\right)}{4 \sqrt{1 - 9 x^{2}} \sqrt{x^{3} + 2 x^{2} + 4}} + \frac{9 \left(\frac{27 x^{2}}{9 x^{2} - 1} - 1\right) \sqrt{x^{3} + 2 x^{2} + 4}}{\left(1 - 9 x^{2}\right)^{\frac{3}{2}}}\right)$$