Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 7 - Section 7.1 - Radical Expressions and Functions - Concept and Vocabulary Check: 3

Answer

$[0, +\infty)$

Work Step by Step

The number inside a square root sign cannot be negative since negative numbers have imaginary square roots. Thus, the domain of $f(x)=\sqrt{x}$ is $x \ge 0$. In interval notation, the domain is $[0, +\infty)$.
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