Answer to Question #145317 in Java | JSP | JSF for Hamza saeed

Question

The roots of the quadratic equation ax
2 + bx + c ¼ 0, a 6¼ 0 are given by the
following formula:
b ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi
b2 4ac p
2a
In this formula, the term b
2 4ac is called the discriminant. If b
2 4ac ¼ 0,
then the equation has a single (repeated) root. If b
2 4ac > 0, the equation
has two real roots. If b
2 4ac < 0, the equation has two complex roots.
Write a program that prompts the user to input the value of a (the
coefficient of x
2
), b (the coefficient of x), and c (the constant term), and
outputs the type of roots of the equation. Furthermore, if b
2 4ac  0, the
4
Programming Exercises | 243

program should output the roots of the quadratic equation. (Hint: Use the
method pow or sqrt from the class Math to calculate the square root.
Chapter 3 explains how to use these methods.)

Answer 1

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