## Calculus 8th Edition

Published by Cengage

# 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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