Numerical Analysis Newton Rapson

Newton Rapson


#include<stdio.h>
#include<conio.h>
#include<math.h>
void main(void)
{
   double x = 3;
   double fact1, fact2,ans;
   double new_value,old,error=1;
   for (int i = 0; i <= 10; i++)
   {
ans = ((x * x * x) - 20) / 3 * (x * x);
if (error <= 0.009)
{
   printf("\nCompleted");
   break;
}
else
{
   fact1 = (x * x * x) - 20;
   fact2 = 3 * (x * x);
   ans = fact1 / fact2;
   ans = x - ans;
   old = x;
   x = ans;
   new_value = ans;
   printf("\nans: %f\n", ans);
   error = ((new_value - old) / new_value) * 100;
   error = abs(error);
   printf("\npercentage:%f\n", error);
}

   }
   getche();
}