$\"\"$

Observe the graph.

We can observe from the graph that $\"\"$ exists for all values of $\"\"$ except at $\"\"$ .

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 $\"\"$ .

$\"\"$ exists for all values of $\"\"$ except at $\"\"$ .

$\"\"$

$\"\"$ exists for all values of $\"\"$ except at $\"\"$ .