/ 12 8*x 27*atan(2*x)\
2*|- -------------------- - ----------- + ------------|
| / 2\ 2 2 |
| \1 + 4*x /*(2 + 3*x) / 2\ (2 + 3*x) |
\ \1 + 4*x / /
-------------------------------------------------------
2
(2 + 3*x)
$$\frac{2 \left(- \frac{8 x}{\left(4 x^{2} + 1\right)^{2}} - \frac{12}{\left(3 x + 2\right) \left(4 x^{2} + 1\right)} + \frac{27 \operatorname{atan}{\left(2 x \right)}}{\left(3 x + 2\right)^{2}}\right)}{\left(3 x + 2\right)^{2}}$$
/ / 2 \ \
| | 16*x | |
| 4*|-1 + --------| |
| | 2| |
| 162*atan(2*x) \ 1 + 4*x / 81 72*x |
4*|- ------------- + ----------------- + --------------------- + ---------------------|
| 3 2 / 2\ 2 2 |
| (2 + 3*x) / 2\ \1 + 4*x /*(2 + 3*x) / 2\ |
\ \1 + 4*x / \1 + 4*x / *(2 + 3*x)/
---------------------------------------------------------------------------------------
2
(2 + 3*x)
$$\frac{4 \left(\frac{72 x}{\left(3 x + 2\right) \left(4 x^{2} + 1\right)^{2}} + \frac{4 \left(\frac{16 x^{2}}{4 x^{2} + 1} - 1\right)}{\left(4 x^{2} + 1\right)^{2}} + \frac{81}{\left(3 x + 2\right)^{2} \left(4 x^{2} + 1\right)} - \frac{162 \operatorname{atan}{\left(2 x \right)}}{\left(3 x + 2\right)^{3}}\right)}{\left(3 x + 2\right)^{2}}$$