2 5*x 2*x*atan(5*x) + --------- 2 1 + 25*x
/ 3 \ | 125*x 10*x | 2*|- ------------ + --------- + atan(5*x)| | 2 2 | | / 2\ 1 + 25*x | \ \1 + 25*x / /
/ / 2 \\ | 2 | 100*x || | 25*x *|-1 + ---------|| | 2 | 2|| | 150*x \ 1 + 25*x /| 10*|3 - --------- + ----------------------| | 2 2 | \ 1 + 25*x 1 + 25*x / ------------------------------------------- 2 1 + 25*x