EBK MATLAB: AN INTRODUCTION WITH APPLIC
EBK MATLAB: AN INTRODUCTION WITH APPLIC
5th Edition
ISBN: 8220102007642
Author: GILAT
Publisher: YUZU
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Chapter 8, Problem 15P

Write a user-defined function that calculates the maximum (or minimum) of a quadratic equation of the form:

f ( x ) = a x 2 + b x + c

Name the function [x, y, w] = maxormin (a. b, C). The input arguments are the coefficients a, b, and c. The output arguments are x. the coordinate of the maximum (or minimum); y, the maximum (or minimum) value; and w, which is equal to 1 if y is a maximum and equal to 2 if y is a minimum.

Use the function to determine the maximum or minimum of the following functions:

(a) f ( x ) = 3 x 2 7 x + 14 (b) f ( x ) = 5 x 2 11 x + 15

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