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

public class Ecuatie1 extends Applet
{
   private double a, b;
   private String prompt;
   public void init()
    {
          String s1, s2;
          s1 = getParameter("a");
          if (s1 == null)
             {        // nu exista
               prompt = "Ecuatie incompatibila!";
               repaint();
             }
           else
                 a = (Double.valueOf(s1)).doubleValue();

           s2 = getParameter("b");
           if (s2 == null)
             {        // nu exista
               prompt = "x = 0";
               repaint();
             }
           else
                 b = (Double.valueOf(s2)).doubleValue();
           prompt = "x = " + -b/a;
       resize(600, 700);
  }

  public void paint(Graphics gr)     {
      gr.drawString(prompt, 100, 100);
    }

}