$\"\"$

The function is $\"\"$ .

Apply derivative on each side with respect to $\"\"$ .

$\"\"$

Derivative of a logarithmic function : $\"\"$ .

$\"\"$

Find the domain of the function.

Logarithm of a negative value is undefined.

$\"\"$

Domain of the function is $\"\"$ .

$\"\"$

$\"\"$ .

Domain of the function is $\"\"$ .