The composite function is
.
is in the form of composite function
.
Here
and
.
Definition of composite function :
\The notation
means that the function
is applied first and then
is applied.
Consider
.
Differentiate on each side with respect to
.

.
Consider
.
Differentiate on each side with respect to
.
.
Differentiate on each side with respect to
.
Chain Rule of derivatives:
.
Substitute
and
in chain rule.

.
and
.
.