#include <stdio.h>
#include <math.h>

double f(double x){
	double r;
	r=(-exp((double)(x))+5.0*x)/(5.0*exp((double)(x)));
	return r;
}
double df(double x){
	double r;
	r=(-x+1.0)/exp((double)(x));
	return r;
}

double g(double x){
	return x-f(x)/df(x);
}

int main(){
	double x=2;
	int i;
	for(i=0;i<10;i++){
		x=g(x);
		printf("x=%24.15e\n",x);
	}
	return 0;
}