$\"\"$

The expression is $\"\"$ .

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

$\"\"$

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

$\"\"$

Quotient rule of derivatives : $\"\"$ .

$\"\"$

Substitute $\"\"$ in the above expression.

$\"\"$

Substitute $\"\"$ in above expression.

$\"\"$

The second derivative of the function is $\"\"$ .