$\"\"$

The functions are $\"\"$ .

To find $\"\"$ .

$\"f$ f(12) is undefined

$\"f$

Since 12 is not in the domain of f, $\"\"$ is undefined for x = 7,

$\"f$ $\"\"$

To find $\"g$ .

$\"g$ is undefined

$\"g$

Since 9 is not in the domain of g, $\"g$ is undefined for x = $\"\"$ 1,

$\"g$ $\"\"$

$\"f$ and $\"g$ .