$\"\"$

\

The function is $\"\"$ .

\

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

\

Denominator of the function should not be the zero.

\

$\"\"$

\

$\"\"$ .

\

Domain of the function is all real numbers except $\"\"$ .

\

The function $\"\"$ is discontinuous at $\"\"$ .

\

$\"\"$

\

The function is $\"\"$ .

\

If $\"\"$ then $\"\"$ .

\

$\"\"$

\

Cancel common terms.

\

$\"\"$ .

\

If $\"\"$ then $\"\"$ .

\

Cancel common terms.

\

$\"\"$ .

\

$\"\"$ is undefined.

\

Hence, the discontinuity at $\"\"$ is non removable.

\

$\"\"$

\

Non removable discontinuity is at $\"\"$ .