$\"\"$

The function $\"\"$ .

Theorem : Any rational function is continuous at every point of its domain.

Numerator: The domain of the polynomial function $\"\"$ is $\"\"$ and it is continuous in its domain.

Denominator: The domain of polynomial function $\"\"$ is $\"\"$ and it is continuous in its domain.

Domain :

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

Domain of any polynomial function $\"\"$ .

Thus the function $\"\"$ is continuous at every number on $\"\"$ .

$\"\"$

The function $\"\"$ is continuous on $\"\"$ .