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