/ 2 2 \
| 1 2 30*x*atan(5*x) 100*x *atan (5*x)|
750*|--------- - atan (5*x) - -------------- + -----------------|
| 2 2 2 |
\1 + 25*x 1 + 25*x 1 + 25*x /
-----------------------------------------------------------------
2
/ 2\
\1 + 25*x /
$$\frac{1}{\left(25 x^{2} + 1\right)^{2}} \left(\frac{75000 x^{2} \operatorname{atan}^{2}{\left (5 x \right )}}{25 x^{2} + 1} - \frac{22500 x \operatorname{atan}{\left (5 x \right )}}{25 x^{2} + 1} - 750 \operatorname{atan}^{2}{\left (5 x \right )} + \frac{750}{25 x^{2} + 1}\right)$$