________
/ 2
lim \/ 9 - x
x->0+
Limit(sqrt(9 - x^2), x, 0)
________
/ 2
lim \/ 9 - x
x->0+
3
= 3.0
________
/ 2
lim \/ 9 - x
x->0-
3
= 3.0
= 3.0