$\"\"$

The function is $\"\"$ .

Rewrite the function as $\"\"$ .

The denominator of the function should not be zero.

$\"\"$

$\"\"$ .

$\"\"$ is discontinuous at every value of $\"\"$ .

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

Non removable discontinuities at integer multiple of $\"\"$ .

$\"\"$

Non removable discontinuities at integer multiple of $\"\"$ .