$\"\"$

The function is $\"\"$ and the interval is $\"\"$ .

Rewrite $\"\"$ .

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

$\"\"$

Again apply derivative on each side with respect to $\"\"$ .

$\"\"$

Apply quotient rule of derivative $\"\"$ .

$\"\"$

To find the maximum value of function $\"\"$ in given region $\"\"$ , sketch the function.

$\"\"$

Observe the graph :

$\"\"$ is maximum point over the interval $\"\"$ .

$\"\"$

Maximum point is $\"\"$ .