$\"\"$

The function is $\"\"$ .

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

The denominator of the function should not be zero.

$\"\"$

$\"\"$ .

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

Since the function $\"\"$ is a rational function, it is continuous on its domain.

The function is continuous for all real numbers, except $\"\"$ and $\"\"$ .

$\"\"$

The function is continuous for all real numbers, except $\"\"$ and $\"\"$ .