Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter R - Review of Basic Concepts - R.1 Sets - R.1 Exercises - Page 8: 96

Answer

$R \cup \emptyset = R$

Work Step by Step

RECALL: (1) $\emptyset$ is the empty set (2) The symbol $\cup$ represents union of sets which lists down in a set the combined elements of the given sets. Since the empty set has no elements., then its union with any other set will be the other set itself. Thus, $R \cup \emptyset = R$
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