rumus java penyesaian kuadrat

Program untuk penyelesaian rumus persamaan kuadrat menggunakan java

Posted on February 15, 2011 by jokosusamto

public class njajal   (simpanlah dg nama njajal.java)
{
public static void main(String[] args)
{
double a = 2    ;
double b = -12  ;
double c = 16   ;
double D = b*b – 4*a*c;

double x1, x2   ;
System.out.println(“Persamaan kuadrat a*x^2+b*x+c=0, di mana”;
System.out.println(“a = ” + a);
System.out.println(“b = ” + b);
System.out.println(“c = ” + c);
System.out.println(“dengan menerapkan rumus ABC diketahui bahwa: “;
if(D<0)
{
System.out.println(“Akar-akar persamaan imaginer.”;
}else
if(D==0)
{
System.out.println(“Akar-akar persamaan nyata tetapi kembar.”;
x1 = -b/(2*a);
System.out.println(“x1 = x2 = ” + x1);
}
else
{
System.out.println(“Akar-akar persamaan nyata dan berbeda.”;
x1 = (-b+Math.sqrt(D))/(2*a);
x2 = (-b-Math.sqrt(D))/(2*a);
System.out.println(“x1 = ” + x1 + “x2 = ” + x2);
}
}
}