$\"\"$

The expression is $\"\"$ .

From the definition of $\"\"$ ,

$\"\"$ and $\"\"$ .

Consider left hand side limit.

$\"\"$

$\"\"$ .

$\"\"$

Consider right hand side limit.

$\"\"$

$\"\"$ .

If the limit exists, then the left hand side limit is equal to right hand side limit.

$\"\"$ .

The left hand side limit is not equal to right hand side limit.

The limit does not exist.

$\"\"$

$\"\"$ is false.