// GraphApplet.java

import java.awt.Graphics;
import java.applet.Applet;

public class GraphApplet extends Applet {

    int fact(int i) {
	 if(i==0)
		 return 1;
	 return i*fact( i - 1 );
    }

    double f(double x) {
	int j=1;
	int	m=57;
	double	vl=0;
	double	y=x/100.0;
	double	sinc;
        for	(int i = 1 ; i <= m; i+=2) {
	double	c=((double) i)*Math.PI/(double) (1*m);
	sinc	=1;
	if	(x > 600)	sinc	=Math.sin(c)/c;
	vl += (double)j* (sinc*Math.cos((double)i*y) / i );
	j*=-1;
	}
        return -vl*200+200;
    }

    public void paint(Graphics g) {
        for (int x = 0 ; x < size().width ; x+=1) {
	    g.drawLine(x, (int)f(x), x + 1, (int)f(x + 1));
        }
    }
}