$\"\"$

The function is $\"\"$ .

Differentiate on each side with respect to $\"\"$ .

$\"\"$

Chain rule of derivatives : $\"\"$ .

$\"\"$

$\"\"$ .

$\"\"$

Find the domain of the function.

The function under the square root cannot be negative.

$\"\"$

Domain of $\"\"$ is $\"\"$ .

$\"\"$

$\"\"$ .

Domain of $\"\"$ is $\"\"$ .