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: 67

Answer

$\subseteq$

Work Step by Step

RECALL: The empty set is a subset of any other set. The rule above means that the empty set is a subset of the set on the right. Thus, the missing expression in the blank is $\subseteq$.
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