#include <math.h>
#include <stdio.h>
#define EPSILON 0.0000001
#define f(x) ((352 * x * x * x) - (64 * x * x) + (198 * x) - 36)
#define f1(x) ((1056 * x * x) - (128 * x) + 198)
double newtonRaphson(double x) {
  double h = f(x) / f1(x);
  if (f(x) == 0 || fabs(h) < EPSILON)
    return x;
  return newtonRaphson(x - h);
}
int main() {
  printf("Root for f(x) = 352x^3 - 64x^2 + 198x - 36 is %lf",
         newtonRaphson(-4));
}