The function is
.
Apply derivative on each side with respect to
.



Apply second derivative on each side with respect to
.

Power rule of derivative : 


Apply third derivative on each side with respect to
.


Apply fourth derivative on each side with respect to
.


Observe the derivatives of the function.
\First order derivative :
.
Second order derivative :
.
Third order derivative :
.
Third order derivative :
.
Hence the
order derivative of the function is
.
The
order derivative of the function is
.