Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 11 - Section 11.1 - Finding Limits Using Tables and Graphs - Exercise Set - Page 1141: 72


a. $450\ ft^2$ b. $450\ ft^2$, see explanations.

Work Step by Step

a. Use the table in the exercise. We have $\lim_{x\to15}f(x)=450\ ft^2$ b. Use the graph in the exercise. We have $\lim_{x\to15}f(x)=450\ ft^2$ which is the same as what we get in part-(a). The graph clearly shows that point $(25,450)$ is a maximum of the function, information that might not be obvious from the table.
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