/ 1 \ lim acot|-----| x->1+ \1 - x/
Limit(acot(1/(1 - x)), x, 1)
0
= 1.16238687736594e-32
/ 1 \ lim acot|-----| x->1- \1 - x/
= -1.16238687736594e-32
1.16238687736594e-32