The function $\"\"$

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

Apply quotient rule in derivatives.

$\"\"$

Case 1: The function is not defined when the denominator is zero.

$\"\"$

Case 2: Logartim of negative value is undefined.

$\"\"$

From the above two cases,

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

Solution :

$\"\"$

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