Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter 1 - Functions and Their Graphs - Section 1.1 Functions - 1.1 Assess Your Understanding - Page 54: 60


The domain is $\{x\in\mathbb{R}|x\leq-2\}$.

Work Step by Step

For a square root to be defined, the function inside the root must be greater than or equal to $0$. The domain is defined by applying the requirement: $-x-2\geq0$ $-x-2+x\ge0+x$ $-2\geq x$ $x\le-2$ Therefore ,the domain is $\{x\in\mathbb{R}|x\leq-2\}$.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.