The limit expression is
.
(a)
\
.
Consider
.

.

.
(b)
\Apply L
Hospital
s Rule.
L
Hospital
s Rule: If
or
then
.
.

.
Therefore,
.
(c)
\The limit expression is
.
Consider
.
Graph :
\Graph the function
.
.gif\")
Observe the graph:
\
.
(a)
.
(b)
.
(c) Graph of the function
is
.