/ 2 2 \
4 | 2 15 144*x*atan(8*x) 256*x *atan (8*x)|
7168*atan (8*x)*|- atan (8*x) + --------- - --------------- + -----------------|
| 2 2 2 |
\ 1 + 64*x 1 + 64*x 1 + 64*x /
--------------------------------------------------------------------------------
2
/ 2\
\1 + 64*x /
$$\frac{7168 \operatorname{atan}^{4}{\left (8 x \right )}}{\left(64 x^{2} + 1\right)^{2}} \left(\frac{256 x^{2} \operatorname{atan}^{2}{\left (8 x \right )}}{64 x^{2} + 1} - \frac{144 x \operatorname{atan}{\left (8 x \right )}}{64 x^{2} + 1} - \operatorname{atan}^{2}{\left (8 x \right )} + \frac{15}{64 x^{2} + 1}\right)$$