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

.
Consider the zero of the function as
.
Newton
s approximation method formula :
.
.
Find
.
Newton
s formula :
.




.
Similarly perform newton approximation for
.
Newton Formula :
.



.
.
Similarly perform newton approximation for
.
Newton Formula :
.




.
Two sucessive approximations is less than
.
Estimate zero of
to be
.
Graph:
\Graph the function
.
Observe the graph :
\The function touches the
-axis at
.
Zeros of the function is
.