$\"\"$

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

Find $\"\"$ .

The function is $\"\"$ .

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

$\"\"$ .

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

$\"\"$

$\"\"$ .

$\"\"$

Find $\"\"$ at $\"\"$ .

$\"\"$ .

Substitute $\"\"$ in $\"\"$ .

$\"\"$

$\"\"$ .

$\"\"$

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

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