The functions are
and
.


Differentiate on each side with respect to
.
.
Newton
s approximation method formula :
.
.
Observe the graph of the function :
\Choose an initial estimate
to be as close where
intersects
.
Consider
.
Find
.
Newton
s formula :
.

.
Perform newton approximation for
.
Newton
s formula :
.

.
Since two succesive approximations differ by less than
, estimate that the functions
and
intersect at
.
The functions
and
intersect at
.