package exercises;
/**
 *
 * @author Lefteris Moussiades
 */
public class Triwnymo {

    private double a;
    private double b;
    private double g;

    public Triwnymo(double a, double b, double g) {
        if (a==0) throw new RuntimeException();
        this.a = a;
        this.b = b;
        this.g = g;
    }
    
    public double diakrinousa() {
        return Math.pow(b, 2)-4*a*g;
    }
    
    public double x1() {
        double d=diakrinousa();
        if (d<0) throw new RuntimeException();
        return (-b+Math.sqrt(d))/2*a;
    }
    
    public double x2() {
        double d=diakrinousa();
        if (d<0) throw new RuntimeException();
        return (-b-Math.sqrt(d))/2*a;
    }
    
    public String toString() {
        return a+"pow(x)+"+b+"x+"+g;
    }
    
    public static void main(String[] args) {
        Triwnymo t1=new Triwnymo(1,2,1);
        Triwnymo t2=new Triwnymo(2,9,2);
        System.out.println("t1 Diakrinousa ="+t1.diakrinousa());
        System.out.println("t2 Diakrinousa ="+t2.diakrinousa());
        if (t1.diakrinousa()>=0) {
            System.out.println(t1+" x1= "+t1.x1());
            System.out.println(t1+" x2= "+t1.x2());
        }
        if (t2.diakrinousa()>=0) {
            System.out.println(t2+" x1= "+t2.x1());
            System.out.println(t2+" t2 x2= "+t2.x2());
        }
    }
}