please i need the answers ASAP Exercise 5Write a method to convert an upper-case letter to a lower-case letter. (Hint: Check first to besure that it is not lower case already.) Exercise 1Create a method that takes a value and indicate whether it is positive or negative by a return aBoolean value.Declared as: boolean isPositive (float a)Exercise 2Create a method that takes a value and tell whether it is null or not.Declared as: boolean isZero (float a)Exercise 3Create a method delta() that takes three values, a, b and e, which are the coefficients of aquadratic equation and returns the value of the delta, which is given by b ² - 4acExercise 4Using the 3 methods above, create an application that calculates the roots of an equation ofsecond degree:ах * + bx +с %3D0For it exists, the coefficient a must be nonzero.If delta is positive, then there are two distinct roots:-6+ VA-6 - VĀand2а2аIf delta is zero, then there is exactly one real root:2a'If delta is negative, there is no real solution.

As per guidelines if multiple question posted we can answer only first 3 questions, please re-post…

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 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)

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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Concept explainers

OOPs

In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.

Constructor

The easiest way to think of a constructor in object-oriented programming (OOP) languages is:

Question

please i need the answers ASAP

Exercise 5
Write a method to convert an upper-case letter to a lower-case letter. (Hint: Check first to be
sure that it is not lower case already.)

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 ² - 4ac
Exercise 4
Using the 3 methods above, create an application that calculates the roots of an equation of
second degree:
ах * + bx +с %3D0
For it exists, the coefficient a must be nonzero.
If delta is positive, then there are two distinct roots:
-6+ VA
-6 - VĀ
and
2а
2а
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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