Exercise 4 Using the 3 methods above, create an application that calculates the roots of an equation of second degree: ах 2 + bx + c %3D0 For it exists, the coefficient a must be nonzero. If delta is positive, then there are two distinct roots: -6+ VA -b – VA and 2a 2a If delta is zero, then there is exactly one real root: 2a If delta is negative, there is no real solution.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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(Java program)

I need a solution for exercise 4 only

(With a screenshot of the code please)

 

 

Exercise 1
Create a method that takes a value and indicate whether it is positive or negative by a return a
Boolean value.
Declared as: boolean isPositive (float a)
NOTE: these are the three
methods that they
Exercise 2
mention in Exercise 4
Create a method that takes a value and tell whether it is null or not.
Declared as: boolean isZero (float a)
Exercise 3
Create a method delta() that takes three values, a, b and c, which are the coefficients of a
quadratic equation and returns the value of the delta, which is given by b 2 - 4ac
Transcribed Image Text:Exercise 1 Create a method that takes a value and indicate whether it is positive or negative by a return a Boolean value. Declared as: boolean isPositive (float a) NOTE: these are the three methods that they Exercise 2 mention in Exercise 4 Create a method that takes a value and tell whether it is null or not. Declared as: boolean isZero (float a) Exercise 3 Create a method delta() that takes three values, a, b and c, which are the coefficients of a quadratic equation and returns the value of the delta, which is given by b 2 - 4ac
Exercise 4
Using the 3 methods above, create an application that calculates the roots of an equation of
second degree:
ах 2 + bx +с 3 0
For it exists, the coefficient a must be nonzero.
If delta is positive, then there are two distinct roots:
-6+ VĀ
-b – VĀ
and
2а
2a
If delta is zero, then there is exactly one real root:
2a'
If delta is negative, there is no real solution.
Transcribed Image Text:Exercise 4 Using the 3 methods above, create an application that calculates the roots of an equation of second degree: ах 2 + bx +с 3 0 For it exists, the coefficient a must be nonzero. If delta is positive, then there are two distinct roots: -6+ VĀ -b – VĀ and 2а 2a If delta is zero, then there is exactly one real root: 2a' If delta is negative, there is no real solution.
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