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Message:

Quadratic Equation

Posted by Hiran on October 27, 2001 at 10:23 PM

> I have an assignment where i have to enter methods into a quadratic class. the folowing methods must be used:
> getCoefficient(), computeDiscriminant() (b^2-4ac), displayTwoRealRoots(), displayOneRoot() (if discriminant=0 theres only one solution. it will compute and display that root with formula x= -b/2a
> I have to add those methods inside main() below.

> // YOUR NAME HERE
> // Program 7
> // Due October 26, 2001
> // This program prompts the user for the coefficients a, b, and c in
> // the equation a x^2 + b x + c = 0, and then it figures out the roots
> // using the quadratic equation
> //
> // x = (-b +/- sqrt(b^2 - 4ac)) / 2a

> import jpb.*;
> public class Quadratic
> {
> public static void main(String[] args)
> {
> double a, b, c;
> double discriminant;

> // Get the coefficients from the user
> System.out.println("This program solves the quadratic equation: "
> + "a x^2 + b x + c = 0");
> System.out.println("Enter the coefficients");
> a = getCoefficient();
> b = getCoefficient();
> c = getCoefficient();

> discriminant = computeDiscriminant(a, b, c);

> if (discriminant > 0)
> displayTwoRealRoots (a, b, discriminant);
> else if (discriminant == 0)
> displayOneRoot(a, b);
> else
> System.out.println("No real roots");
> }

> // methods go here.
> }

> I know this is huge, any help is appreciated.

> James

What exactly are you stuck on? If you want someone to write those methods for you, I doubt you'll find someone who is willing to help. If, on the other hand, you've attempted to write those methods and you're stuck, just post what you have written (or attempted) and what exactly you're stuck on.
Hiran