$\"\"$

The function $\"\"$ at interval $\"\"$ .

The Domain of a function is all values of $\"\"$ , those makes the function mathematically correct.

Denominator of the function should not be zero.

$\"\"$

$\"\"$ .

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

$\"\"$ is not in the interval $\"\"$

Hence it is not considered.

The function $\"\"$ is discontinuous at $\"\"$ in the interval $\"\"$ .

$\"\"$

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