acot(x) 7*E
acot(x) -7*e ----------- 2 1 + x
acot(x) 7*(1 + 2*x)*e -------------------- 2 / 2\ \1 + x /
/ 2 \ | 1 8*x 6*x | acot(x) 7*|2 - ------ - ------ - ------|*e | 2 2 2| \ 1 + x 1 + x 1 + x / ----------------------------------------- 2 / 2\ \1 + x /