/0 \ acot(x)*|- - 5| \2 /
acot(x)*(0/2 - 5)
/0 \ -|- - 5| \2 / --------- 2 1 + x
-10*x --------- 2 / 2\ \1 + x /
/ 2 \ | 4*x | 10*|-1 + ------| | 2| \ 1 + x / ---------------- 2 / 2\ \1 + x /