Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 12 Sequences and Series - 12.5 Use Recursive Rules with Sequences and Functions - Guided Practice for Examples 1 and 2 - Page 828: 2


$a_{0}=162$ $a_{1}=81$ $a_{2}=40.5$ $a_{3}=20.25$ $a_{4}=10.125$

Work Step by Step

The first five terms are indexed from 0 to 4: $a_{0}=162$ $a_{1}=0.5\cdot a_{0}=81$ $a_{2}=0.5\cdot a_{1}=81/2=40.5$ $a_{3}=0.5\cdot a_{2}=81/4=20.25$ $a_{4}=0.5\cdot a_{3}=81/8=10.125$
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