The function is .
Consider ,
.
Apply derivative on each side with respect to .
Quotient rule of derivatives : .
.
\
Consider ,
.
Apply derivative on each side with respect to .
.
.
\
Consider ,
.
Apply derivative on each side with respect to .
.
.
\
Consider ,
.
Apply derivative on each side with respect to .
.
.
\
Observe the sequence.
\For ,
.
For ,
.
For ,
.
For ,
.
The first derivative in terms of
can be written as
.
\
in terms of
is
.