$\"\"$

The functions are $\"\"$ and $\"\"$ .

Domain test :

Find the domain of $\"\"$ .

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

The function under the square root should not be a negative.

$\"\"$

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

Find the domain of $\"\"$ .

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

The function under the square root should not be a negative.

$\"\"$

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

From above, the functions of the domains are equal.

Therefore the two functions are equal.

$\"\"$

Observe the two functions, they are equal but with different variables.

For same values of $\"\"$ and $\"\"$ , the two functions yields same solution.

Consider $\"\"$ .

Substitute $\"\"$ in $\"\"$ .

$\"\"$

$\"\"$ ( Since $\"\"$ )

Therefore, $\"\"$ .

The two functions are equal.

$\"\"$

Yes, it is true.