3 E *cot(x)
E^3*cot(x)
/ 2 \ 3 \-1 - cot (x)/*e
/ 2 \ 3 2*\1 + cot (x)/*cot(x)*e
/ 2 \ / 2 \ 3 -2*\1 + cot (x)/*\1 + 3*cot (x)/*e