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Message:

Quadratic Equation

Posted by Matt Gerrans on October 26, 2001 at 2:15 AM

Uh... So, what's your question?

(I did fill in part of the code below)

- mfg


> 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.

> // James
> // 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.
> }

> James

• ROFL !!! Chin Loong October 26, 2001 at 5:22 AM (0)