Calculus 8th Edition

Published by Cengage
ISBN 10: 1285740629
ISBN 13: 978-1-28574-062-1

Chapter 1 - Functions and Limits - Review - Exercises: 8

Answer

Domain$= (-\infty,\infty)$ Range= $[2,4]$

Work Step by Step

The cosine is defined for all reals, so Domain = $\mathbb{R}= (-\infty,\infty)$ Range: Minimum of cosine is $-1$, so the minimum of F is $3-1=2$ Maximum of cosine is $+1$, so the minimum of F is $3+1=4$ Range= $[2,4]$
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