/ (-1 + 2*x)*(-4 + x)\ -acot(x) 2*|2 - -------------------|*e | 2 | \ 1 + x / ------------------------------------- 2 1 + x
/ / 2 \\ | | 1 6*x 8*x || -acot(x) 2*|3 - 6*x + (-4 + x)*|-2 + ------ - ------ + ------||*e | | 2 2 2|| \ \ 1 + x 1 + x 1 + x // ---------------------------------------------------------------- 2 / 2\ \1 + x /