/ 2 \ |x | acot(x)*|-- - 5| \2 /
acot(x)*(x^2/2 - 5)
2 x -- - 5 2 x*acot(x) - ------ 2 1 + x
/ 2\ 2*x x*\-10 + x / - ------ + ------------ + acot(x) 2 2 1 + x / 2\ \1 + x /
/ 2 \ | 4*x | / 2\ |-1 + ------|*\-10 + x / 2 | 2| 6*x \ 1 + x / -3 + ------ - ------------------------ 2 2 1 + x 1 + x -------------------------------------- 2 1 + x