$\"\"$

The function is $\"\"$ .

Simplify the function.

$\"\"$

Multiply the numerator and denominator by $\"\"$ in above function.

$\"\"$

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

$\"\"$ .

Quotient rule of differentiation $\"\"$ .

$\"\"$

Power rule of differentiation : $\"\"$ .

$\"\"$

$\"\"$ .