The function is .
The function is in the form of composite function .
Consider and
Consider .
Differentiate on each side with respect to .
Consider .
Differentiate on each side with respect to .
.
Chain Rule of derivatives: .
Substitute and
in chain rule.
Differentiate on each side with respect to .
Second derivative of the function is .
First derivative of the function is .
Second derivative of the function is .