Step 1:

The function is .

Apply derivative on each side with respect to .

Apply power rule of differentiation: .

.

.

Step 1:

Apply derivative on each side with respect to .

.

Solution:

 .

(2)

Step 1:

The function is .

Apply derivative on each side with respect to .

Apply power rule of differentiation: .

.

Step 2:

Apply derivative on each side with respect to .

.

.

Solution:

.

(3)

Step 1:

The function is .

Apply derivative on each side with respect to .

Apply formula: .

.

Step 2:

Again apply derivative on each side with respect to .

.

The second derivative is .

Solution:

The second derivative is .