5*x
--------- + atan(5*x)
2
1 + 25*x
$$\frac{5 x}{25 x^{2} + 1} + \operatorname{atan}{\left (5 x \right )}$$
/ 2 \
| 25*x |
10*|1 - ---------|
| 2|
\ 1 + 25*x /
------------------
2
1 + 25*x
$$\frac{- \frac{250 x^{2}}{25 x^{2} + 1} + 10}{25 x^{2} + 1}$$
/ 2 \
| 25*x |
1000*x*|-1 + ---------|
| 2|
\ 1 + 25*x /
-----------------------
2
/ 2\
\1 + 25*x /
$$\frac{1000 x}{\left(25 x^{2} + 1\right)^{2}} \left(\frac{25 x^{2}}{25 x^{2} + 1} - 1\right)$$