2 atan (x) / 2 \ 2*5 *\1 - 2*x*atan(x) + 2*atan (x)*log(5)/*log(5) -------------------------------------------------------- 2 / 2\ \1 + x /
2 / 3 2 2 2 \ atan (x) | 3*x 2*atan (x)*log (5) 3*atan(x)*log(5) 4*x *atan(x) 6*x*atan (x)*log(5)| 4*5 *|-atan(x) - ------ + ------------------ + ---------------- + ------------ - -------------------|*log(5) | 2 2 2 2 2 | \ 1 + x 1 + x 1 + x 1 + x 1 + x / ------------------------------------------------------------------------------------------------------------------- 2 / 2\ \1 + x /