The piecewise function is
.
(a)
\Find
.
If
then the function is
.

.
Find
.
If
then the function is
.

.
(b)
\Find
.
Left hand limit :
.
Right hand limit :
.
Left hand limit and right hand limit are not equal, so limit does not exist.
\
does not exist.
(c)
\Graph :
\Graph the function
:

(a)
and
.
(b)
does not exist.
(c) Graph of the function
is
.