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The strength S of a wooden beam of width x and depth y is

Precalculus: Mathematics for Calculus | 6th Edition | ISBN: 9780840068071 | Authors: James Stewart ISBN: 9780840068071 161

Solution for problem 21 Chapter 3

Precalculus: Mathematics for Calculus | 6th Edition

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Precalculus: Mathematics for Calculus | 6th Edition | ISBN: 9780840068071 | Authors: James Stewart

Precalculus: Mathematics for Calculus | 6th Edition

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Problem 21

The strength S of a wooden beam of width x and depth y is given by the formula S 13.8xy 2 . A beam is to be cut from a log of diameter 10 in., as shown in the figure. (a) Express the strength S of this beam as a function of x only. (b) What is the domain of the function S? (c) Draw a graph of S. (d) What width will make the beam the strongest?

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Chapter 3, Problem 21 is Solved
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Textbook: Precalculus: Mathematics for Calculus
Edition: 6
Author: James Stewart
ISBN: 9780840068071

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The strength S of a wooden beam of width x and depth y is