#include<stdio.h>

int k;
double t[11],y[11],h,a,b,c,d;

#define f(y) (-(y+1)*(y+3))

int main()
{
	printf("h yi girin.. "); scanf("%lf",&h);
	printf("a yi girin.. "); scanf("%lf",&a);
	printf("b yi girin.. "); scanf("%lf",&b);
	printf("y0 i girin.. "); scanf("%lf",&y[0]);

	t[0] = a;

	for(k = 0; k <= ((b - a) / h); k++)
	{
		t[k + 1] = t[k] + h;
		y[k + 1] = y[k] + h * f(y[k]);
		printf("y[%d]=%lf
", k + 1, y[k + 1]);
	}
	return 0;
}