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: 14

Answer

$a_1=6$ $a_2=-6$ $a_3=6$ $a_4=-6$ $a_5=6$

Work Step by Step

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