acot(x) 3
acot(x) -3 *log(3) ----------------- 2 1 + x
acot(x) 3 *(2*x + log(3))*log(3) ------------------------------ 2 / 2\ \1 + x /
/ 2 2 \ acot(x) | log (3) 8*x 6*x*log(3)| 3 *|2 - ------- - ------ - ----------|*log(3) | 2 2 2 | \ 1 + x 1 + x 1 + x / --------------------------------------------------- 2 / 2\ \1 + x /