$\"\"$

The function is $\"\"$ .

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

$\"\"$

$\"\"$ .

$\"\"$

The derivative at the point is $\"\"$ .

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

$\"\"$ .

The derivative at the point is $\"\"$ is $\"\"$ .

$\"\"$

$\"\"$ .

The derivative at the point is $\"\"$ is $\"\"$ .