Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 1 - Section 1.7 - Combinations of Functions; Composite Functions - Concept and Vocabulary Check - Page 257: 1

Answer

zero

Work Step by Step

Division of zero is not allowed, therefore real numbers that make the denominator equal to zero have to be excluded from the function's domain. Thus, the missing expression in the given statement is zero.
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