The functions are
and
.
The interval is
.
Mean value theorem:
\The value of
lies on the interval
such that
.
Here
and
.
Consider
.
Apply derivative on each side with respect to
.
.
Consider
.
Apply derivative on each side with respect to
.

Substiute the above result in
.

The value of
is approximately
which lies between
and
.
The value of
is approximately
.