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