/ ___\ acot\\/ x /
-1 --------------- ___ 2*\/ x *(1 + x)
1 2 - + ----- x 1 + x --------------- ___ 4*\/ x *(1 + x)
/ 1 3 1 \ -|-------- + ---- + -----------| | 2 2 2*x*(1 + x)| \(1 + x) 8*x / --------------------------------- ___ \/ x *(1 + x)