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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) Exercise 2 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: ax 2 + bx + c = 0 For it exists, the coefficient a must be nonzero. If delta is positive, then there are two distinct roots: -6+ VĀ and 2a -6 - VĀ 2a If delta is zero, then there is exactly one real root: 2a' If delta is negative, there is no real solution.

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) Exercise 2 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: ax 2 + bx + c = 0 For it exists, the coefficient a must be nonzero. If delta is positive, then there are two distinct roots: -6+ VĀ and 2a -6 - VĀ 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
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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using java.

Using the 3 methods above, create an application that calculates the roots of an equation of second degree:

ax 2 + bx + c = 0
For it exists, the coefficient a must be nonzero.
If delta is positive, then there are two distinct roots:

If delta is zero, then there is exactly one real root:

If delta is negative, there is no real solution.

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) Exercise 2 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 e, which are the coefficients of a quadratic equation and returns the value of the delta, which is given by b ? - 4ac Exercise 4 Using the 3 methods above, create an application that calculates the roots of an equation of second degree: ax 2+ bx + c = 0 For it exists, the coefficient a must be nonzero, If delta is positive, then there are two distinct roots: -b+ VA and -6 - VĀ 2a 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 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) Exercise 2 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 e, which are the coefficients of a quadratic equation and returns the value of the delta, which is given by b ? - 4ac Exercise 4 Using the 3 methods above, create an application that calculates the roots of an equation of second degree: ax 2+ bx + c = 0 For it exists, the coefficient a must be nonzero, If delta is positive, then there are two distinct roots: -b+ VA and -6 - VĀ 2a 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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