$\"\"$

The limit expression is $\"\"$ .

$\"\"$

$\"\"$ .

The denominator should not be zero.

Therefore, the limit does not exist at $\"\"$ .

Graph:

Graph the function $\"\"$ .

$\"\"$

Observe the graph:

As $\"\"$ approaches to $\"\"$ from left hand side, the function $\"\"$ approaches to $\"\"$ .

As $\"\"$ approaches to $\"\"$ from right hand side, the function $\"\"$ approaches to $\"\"$ .

Since the left hand limit and the right hand limit are not equal, limit does not exist at $\"\"$ .

$\"\"$ is vertical asymptote.

$\"\"$

No; Vertical asymtote.