Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 11 - 11.1 - Sequences and Series - 11.1 Exercises - Page 777: 9


$a_1=5$ $a_2=3$ $a_3=5$ $a_4=3$ $a_5=5$

Work Step by Step

$a_n=(-1)^{n+1}+4$ $a_1=(-1)^{1+1}+4=(-1)^2+4=1+4=5$ $a_2=(-1)^{2+1}+4=(-1)^3+4=-1+4=3$ $a_3=(-1)^{3+1}+4=(-1)^4+4=1+4=5$ $a_4=(-1)^{4+1}+4=(-1)^5+4=-1+4=3$ $a_5=(-1)^{5+1}+4=(-1)^6+4=1+4=5$
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