Write a program that determines the real roots of a quadratic equation. To calculate the roots of the equation the program calculates the discriminant D, given by: D = b - 4ac. If D>0, the program displays message "The equation has two roots," and the roots are displayed in the next line. If D = 0, the program displays message "The equation has one root," and the root is displayed in the next line. If D<0, the program displays message "The equation has no real roots." Run the program to obtain solutions to the following three equations: a) 2x + 8x +8 = 0 b) -5x + 3x – 4 = 0 c) -2x + 7x + 4 = 0 Script O 1 Don't change the variable names 2 %Part A 3 a = 2; b = 8; c = 8 4 xa = %Use variable 'xa' for one real root 5 xla = &Use variables 'xla' and 'x2a' for 2 distinct roots 6 x2a = 7 Part B 8 a = -5; b = 3; c = -4 9 xb = %Use variable 'xb' for one real root 10 x1b = %Use variables 'x1b' and 'x2b' for 2 distinct roots 11 x2b = 12 %Part C 13 a = -2; b = 7; c = 4 14 xc = %Use variable 'xc' for one real root 15 x1c = %Use variables 'x1c' and 'x2c' for 2 distinct roots 16 x2c =

Write a program that determines the real roots of a quadratic equation. To calculate the roots of the equation the program calculates the discriminant D, given by: D = b - 4ac. If D>0, the program displays message "The equation has two roots," and the roots are displayed in the next line. If D = 0, the program displays message "The equation has one root," and the root is displayed in the next line. If D<0, the program displays message "The equation has no real roots." Run the program to obtain solutions to the following three equations: a) 2x + 8x +8 = 0 b) -5x + 3x – 4 = 0 c) -2x + 7x + 4 = 0 Script O 1 Don't change the variable names 2 %Part A 3 a = 2; b = 8; c = 8 4 xa = %Use variable 'xa' for one real root 5 xla = &Use variables 'xla' and 'x2a' for 2 distinct roots 6 x2a = 7 Part B 8 a = -5; b = 3; c = -4 9 xb = %Use variable 'xb' for one real root 10 x1b = %Use variables 'x1b' and 'x2b' for 2 distinct roots 11 x2b = 12 %Part C 13 a = -2; b = 7; c = 4 14 xc = %Use variable 'xc' for one real root 15 x1c = %Use variables 'x1c' and 'x2c' for 2 distinct roots 16 x2c =

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

Variables and Constant

Constants and variables are widely used in mathematical equations and expressions. They are also commonly found in the domain of programming, where each language has its own way to differentiate between a constant and a variable. Since they have all sorts of applications, knowing their differences is a good place to start.

Question

Write a program that determines the real roots of a quadratic equation. To calculate the roots of the equation the program calculates the discriminant D, given by: D = b - 4ac.
If D>0, the program displays message "The equation has two roots," and the roots are displayed in the next line.
If D = 0, the program displays message "The equation has one root," and the root is displayed in the next line.
If D<0, the program displays message "The equation has no real roots."
Run the program to obtain solutions to the following three equations:
a) 2x + 8x + 8 = 0
b) -5x + 3x - 4 =0
c) -2x + 7x + 4 = (0
Script ®
C Reset
I MATLAB Documer
1 %Don't change the variable names
2 Part A
3 a = 2; b = 8; c = 8
4 xa = %Use variable 'xa' for one real root
5 xla = %Use variables 'xla' and 'x2a' for 2 distinct roots
6 x2a =
Part B
8 a = -5; b = 3; c = -4
9 xb = %Use variable 'xb' for one real root
10 x1b = %Use variables 'x1b' and 'x2b' for 2 distinct roots
11 x2b =
12 %Part C
13 a = -2; b = 7; c = 4
14 xc = %Use variable 'xc' for one real root
15 x1c = %Use variables 'xlc' and 'x2c' for 2 distinct roots
16 x2c =

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