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