$\"\"$

The function is $\"\"$

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

$\"\"$

The product rule of derivatives: $\"\"$

$\"\"$

The first derivative is $\"\"$ .

$\"\"$

Consider $\"\"$ .

Again differentiate.

$\"\"$

$\"\"$ .

The second derivative is $\"\"$ .

$\"\"$

The second derivative is $\"\"$ .