The function is
.
Observe the graph.
\There is a vertical asymptote at
.
Vertical Asymptote means the zeroes of the denominator.
\As
tends to
from the left hand side,
tends to
.
As
tends to
from the right hand side,
tends to
.
Since the left hand limit and right hand limit are not equal, limit does not exist at
.
Limit does not exist.