Precalculus (6th Edition) Blitzer

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

Chapter P - Review Exercises: 5

Answer

$A\cup B=\{a,b,c,d,e\}$

Work Step by Step

Recall that an element $x\in A\cup B$ if and only if $x\in A$ or $x\in B$. Thus, we find the union by finding the elements that are contained in either set $A$ or set $B$. This gives us $A\cup B=\{a,b,c,d,e\}$.
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