Question

java code

Design a class named QuadraticEquation for a quadratic equation with real coefficients ax? + bx + x = 0 where a = 0. The class contains: (a) Private data fields a, b, and c that represent three coefficients. (b) A constructor taking arguments for a, b, and c. (c) Getter and setter methods for each attribute field. (d) A method named getDiscriminant() that returns the discriminant, 62 - 4ac. (e) A method named hasReal Solution that determines If the equation has a real solution

Answer 1

public class QuadraticEquation {
    private double a;
    private double b;
    private double c;

    public QuadraticEquation(double a, double b, double c) {
        this.a = a;
        this.b = b;
        this.c = c;
    }

    public double getA() {
        return a;
    }

    public void setA(double a) {
        this.a = a;
    }

    public double getB() {
        return b;
    }

    public void setB(double b) {
        this.b = b;
    }

    public double getC() {
        return c;
    }

    public void setC(double c) {
        this.c = c;
    }

    public double getDiscriminant() {
        return b * b - 4 * a * c;
    }

    public boolean hasRealSolution() {
        return getDiscriminant() >= 0;
    }
}

// Main.java

public class Main {
    public static void main(String args[]) {
        QuadraticEquation equation = new QuadraticEquation(1, 3, 2);
        System.out.println("Discriminant of the equation: " + equation.getDiscriminant());
        System.out.println("The equation has real roots: " + equation.hasRealSolution());
    }
}