//**************************************
// Name: Function
// Description:find result of x1, x2 from PFK
// By: Mr. SNMP Simamora
//
// Inputs:integer number
//
// Returns:numeric number
//
// Assumes:reader must learn about array and swing in JAVA concept.
//
// Side Effects:N/A
//
//This code is copyrighted and has// limited warranties.Please see http://www.Planet-Source-Code.com/vb/scripts/ShowCode.asp?txtCodeId=6597&lngWId=2//for details.//**************************************

import javax.swing.JOptionPane;
public class persFK1 {
 public static void main(String args[]) {
 double x1,x2,a,b,c,z,v;
 System.out.println("Bentuk PFK: ax^2+bx+c");
 String a1=JOptionPane.showInputDialog("Masukkan a:");
 a=Double.parseDouble(a1);
 String b1=JOptionPane.showInputDialog("Masukkan b:");
 b=Double.parseDouble(b1);
 String c1=JOptionPane.showInputDialog("Masukkan c:");
 c=Double.parseDouble(c1);
 z=b*b-4*a*c;
 v=Math.sqrt(z);
 x1 = (-1*b+v)/(2*a);
 x2 = (-1*b-v)/(2*a);
 System.out.println("x1 = " + x1);
 System.out.println("x2 = " + x2);
 System.exit(0);
 }
}