$\"\"$

The function is $\"\"$ .

Find $\"\"$ .

Differentiate on each side with respect to $\"\"$ , holding $\"\"$ as a constant.

$\"\"$

Again differentiate on each side with respect to $\"\"$ , holding $\"\"$ as a constant.

$\"\"$

Again differentiate on each side with respect to $\"\"$ , holding $\"\"$ as a constant.

$\"\"$

Find $\"\"$ .

Differentiate $\"\"$ with respect to $\"\"$ , holding $\"\"$ as a constant.

$\"\"$ \ \

Again differentiate on each side with respect to $\"\"$ , holding $\"\"$ as a constant.

$\"\"$ \ \

$\"\"$ .

$\"\"$ . \ \