/ 2 2 2 2 \
| 2 1 log (1 + atan(5*x)) 3*log(1 + atan(5*x)) 100*x *log (1 + atan(5*x)) 30*x*log(1 + atan(5*x)) 15*x*log (1 + atan(5*x)) |
750*|- log (1 + atan(5*x)) + ---------------------------- + ---------------------------- - ---------------------------- + -------------------------- - --------------------------- + ---------------------------|
| / 2\ 2 / 2\ 2 / 2\ 2 2 / 2\ / 2\ |
\ \1 + 25*x /*(1 + atan(5*x)) \1 + 25*x /*(1 + atan(5*x)) \1 + 25*x /*(1 + atan(5*x)) 1 + 25*x \1 + 25*x /*(1 + atan(5*x)) \1 + 25*x /*(1 + atan(5*x))/
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
2
/ 2\
\1 + 25*x / *(1 + atan(5*x))