Answer
Done below.
Work Step by Step
Each element of $A$ can be found within $A \cup B$. Since $A$ is infinite, there is then no possibility that $A \cup B$ is finite. Hence $A \cup B$ is infinite.
Discrete Mathematics and Its Applications, Seventh Edition
by Rosen, Kenneth
Published by
McGraw-Hill Education
ISBN 10:
0073383090
ISBN 13:
978-0-07338-309-5
Chapter 2 - Section 2.2 - Set Operations - Exercises - Page 137: 45
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
