/ 2 \
| 1 4*(3 + 2*x) 3*(3 + 2*x) |
16*|-1 + ------------------------------- + -------------- + ------------------------------|
| / 2\ 2 2 / 2\ |
\ \1 + (3 + 2*x) /*atan (3 + 2*x) 1 + (3 + 2*x) \1 + (3 + 2*x) /*atan(3 + 2*x)/
-------------------------------------------------------------------------------------------
2
/ 2\
\1 + (3 + 2*x) / *atan(3 + 2*x)
$$\frac{16 \left(\frac{4 \left(2 x + 3\right)^{2}}{\left(2 x + 3\right)^{2} + 1} + \frac{3 \left(2 x + 3\right)}{\left(\left(2 x + 3\right)^{2} + 1\right) \operatorname{atan}{\left(2 x + 3 \right)}} - 1 + \frac{1}{\left(\left(2 x + 3\right)^{2} + 1\right) \operatorname{atan}^{2}{\left(2 x + 3 \right)}}\right)}{\left(\left(2 x + 3\right)^{2} + 1\right)^{2} \operatorname{atan}{\left(2 x + 3 \right)}}$$