(Algebra: quadratic equations) Design a class named QuadraticEquation for a quadratic equation ax² + bx + x = 0. The class contains: 1 The private data fields a, b, and c that represent three coefficients. 1 A constructor for the arguments for a, b, and c. 1 Three get methods for a, b, and c. A method named getDiscriminant() that returns the discriminant, which is b? – 4ac. The methods named getRoot1() and getRoot2() for returning the two roots of the equation using these formulas: -b + Vb? – 4ac -b - Vb? – 4ac and r2 2a 2a These methods are useful only if the discriminant is nonnegative. Let these meth- ods return 0 if the discriminant is negative. Draw the UML diagram for the class, and then implement the class. Write a test program that prompts the user to enter values for a, b, and c and displays the result based on the discriminant. If the discriminant is positive, display the two roots. If the discriminant is 0, display the one root. Otherwise, display "The equation has no roots." See Exercise 4.1 for sample runs.

Database System Concepts
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ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Chapter1: Introduction
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(Algebra: quadratic equations) Design a class named QuadraticEquation for a
quadratic equation ax² + bx + x = 0. The class contains:
1 The private data fields a, b, and c that represent three coefficients.
1 A constructor for the arguments for a, b, and c.
1 Three get methods for a, b, and c.
A method named getDiscriminant() that returns the discriminant, which is
b? – 4ac.
The methods named getRoot1() and getRoot2() for returning the two roots
of the equation using these formulas:
-b + Vb? – 4ac
-b - Vb? – 4ac
and r2
2a
2a
These methods are useful only if the discriminant is nonnegative. Let these meth-
ods return 0 if the discriminant is negative.
Draw the UML diagram for the class, and then implement the class. Write a test
program that prompts the user to enter values for a, b, and c and displays the result
based on the discriminant. If the discriminant is positive, display the two roots. If
the discriminant is 0, display the one root. Otherwise, display "The equation has
no roots." See Exercise 4.1 for sample runs.
Transcribed Image Text:(Algebra: quadratic equations) Design a class named QuadraticEquation for a quadratic equation ax² + bx + x = 0. The class contains: 1 The private data fields a, b, and c that represent three coefficients. 1 A constructor for the arguments for a, b, and c. 1 Three get methods for a, b, and c. A method named getDiscriminant() that returns the discriminant, which is b? – 4ac. The methods named getRoot1() and getRoot2() for returning the two roots of the equation using these formulas: -b + Vb? – 4ac -b - Vb? – 4ac and r2 2a 2a These methods are useful only if the discriminant is nonnegative. Let these meth- ods return 0 if the discriminant is negative. Draw the UML diagram for the class, and then implement the class. Write a test program that prompts the user to enter values for a, b, and c and displays the result based on the discriminant. If the discriminant is positive, display the two roots. If the discriminant is 0, display the one root. Otherwise, display "The equation has no roots." See Exercise 4.1 for sample runs.
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