Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Chapter 9 - Conic Sections, Sequences, and Series - 9.3 Arithmetic Sequences - 9.3 Exercises - Page 727: 5



Work Step by Step

$a_n=4(-1)^n$ $a_1=4(-1)^1=-4$ $a_2=4(-1)^2=4$ $a_3=4(-1)^3=-4$ $a_4=4(-1)^4=4$
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