lim asin(x) x->-oo
Limit(asin(x), x, -oo)
lim asin(x) x->-1+
-pi ---- 2
= -1.55108423032736
lim asin(x) x->-1-
= (-1.5707963267949 + 0.0198582746675635j)
oo*I
-1.55108423032736