$\"\"$

The function is $\"\"$ .

The domain of a function is all possible values of $\"\"$ .

Find left hand side limit $\"\"$ .

As $\"\"$ tends to $\"\"$ from left hand side.

$\"\"$

$\"\"$ .

Find right hand limit $\"\"$ .

As $\"\"$ tends to $\"\"$ from right hand side.

$\"\"$

$\"\"$ .

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

Hence, the function $\"\"$ is not continuous at $\"\"$ .

The function has non removable discontinuity at $\"\"$ .

$\"\"$

The function has non removable discontinuity at $\"\"$ .