GEN_VAL_FUN.java

import java.io.*;

class GEN_VAL_FUN
{
	public static void main(String S[]) throws IOException { new GEN_VAL_FUN(); }

	public GEN_VAL_FUN() throws IOException { Genera(); }
	
	void Genera() throws IOException
	{/*
		// FUNCION "X^3 - X"
			PrintStream DATOS = new PrintStream(new FileOutputStream("x3_x.txt"));
			double x = -2, Hasta = 2, y, Delta = 0.01;
			while (x <= Hasta + Delta)
			{
				y = x*x*x - x;
				DATOS.println(x + "," + y);
				x += Delta;
			}
			DATOS.close();
		*/
		// FUNCION "COS(X)"
			PrintStream DATOS = new PrintStream(new FileOutputStream("Cos.txt"));
			double x = 0, Hasta = 5, y, Delta = 1;
			double CTE = 2 * 3.1416;
			int N = 100;
			int Fuente = 10;
			while (x <= Hasta + Delta)
			{
				y = Fuente * Math.sin(CTE*x) / (CTE * N);
				//y = x*x*x - x;
				DATOS.println(x + "," + y);
				x += Delta;
			}
			DATOS.close();
		/*
		// FUNCION y=(x^2-2x+2)(x-1) desde -4 hasta 4 con delta=0.01
		*/
	}
}