The rational function is $\"\"$ .

All possible values of $\"\"$ is the domain of the function.

Since the function $\"\"$ is a rational function, the denominator

of the function should not be the zero.

$\"\"$

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

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

Thus, the domain of function is all real numbers except $\"\"$ .

Domain is $\"\"$ .

The domain of the function is $\"\"$ .