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