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 778: 53


$a_1=81$ $a_2=27$ $a_3=9$ $a_4=3$ $a_5=1$

Work Step by Step

$a_1=81$ $a_{k+1}=\frac{1}{3}a_k$ $a_2=\frac{1}{3}a_1=\frac{1}{3}·81=27$ $a_3=\frac{1}{3}a_2=\frac{1}{3}·27=9$ $a_4=\frac{1}{3}a_3=\frac{1}{3}·9=3$ $a_5=\frac{1}{3}a_4=\frac{1}{3}·3=1$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After 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.