/ / 2 2 \ \
| 3 | 1 2 6*x*atan(x) 4*x *atan (x)| |
|cot (x)*|------ - atan (x) - ----------- + -------------| |
| | 2 2 2 | / 2 \ 2 / 2 \ / 2 \ 2 / 2 \ |
| \1 + x 1 + x 1 + x / 3 / 2 \ |/ 2 \ 4 2 / 2 \| 9*atan (x)*\1 + cot (x)/*\1 + 2*cot (x)/*cot(x) 9*cot (x)*\1 + cot (x)/*(-1 + x*atan(x))*atan(x)|
6*|--------------------------------------------------------- - atan (x)*\1 + cot (x)/*\\1 + cot (x)/ + 2*cot (x) + 7*cot (x)*\1 + cot (x)// + ----------------------------------------------- + ------------------------------------------------|
| 2 2 2 |
| / 2\ 1 + x / 2\ |
\ \1 + x / \1 + x / /