import java.awt.*;
import java.applet.*;

public class GraphApplet extends Applet {
   double f(double x) {
      return (Math.cos(x) + Math.sin(x/7) + 2)
            * getSize().height / 4;
   }
    
   Color bgColor = new Color(255,255,255);
   public void paint(Graphics g) {
       setBackground(bgColor);
     
       for (int x = 0 ; x < getSize().width ; x++) {
	 g.drawLine(x, (int)f(x), x + 1, (int)f(x + 1));
      }
   }
}