/ / 2 \ \
| | 64*x | |
| 128*|-1 + ---------| |
| 2 | 2| |
x | 3 12*log (3) \ 1 + 16*x / 384*x*log(3)|
3 *|log (3)*atan(4*x) + ---------- + -------------------- - ------------|
| 2 2 2|
| 1 + 16*x / 2\ / 2\ |
\ \1 + 16*x / \1 + 16*x / /
$$3^{x} \left(- \frac{384 x \log{\left(3 \right)}}{\left(16 x^{2} + 1\right)^{2}} + \log{\left(3 \right)}^{3} \operatorname{atan}{\left(4 x \right)} + \frac{12 \log{\left(3 \right)}^{2}}{16 x^{2} + 1} + \frac{128 \left(\frac{64 x^{2}}{16 x^{2} + 1} - 1\right)}{\left(16 x^{2} + 1\right)^{2}}\right)$$