$\"\"$

\

The function is $\"\"$ .

\

Apply logarithm on each side.

\

$\"\"$

\

Power property of logarithms : $\"\"$ .

\

$\"\"$ .

\

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

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .