Calculus with Applications (10th Edition)

Published by Pearson
ISBN 10: 0321749006
ISBN 13: 978-0-32174-900-0

Chapter 2 - Nonlinear Functions - 2.1 Properties of Functions - 2.1 Exercises - Page 54: 6


$\boxed{\textbf{Is a function.}}$

Work Step by Step

A function is a rule that assigns to each element from one set exactly one element from another set. Written as $\sqrt{x}$, it is understood that we calculate the POSITIVE square root of the number x. For any non-negative x, there exists one and only one positive square root... so this rule is a function. (to each x-value, only one y-value is assigned)
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