College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 8, Sequences and Series - Section 8.1 - Sequences and Summation Notation - 8.1 Exercises: 20

Answer

$a_1=1$ $a_2=1$ $a_3=1$ $a_4=3$ $a_5=5$

Work Step by Step

We are given: $a_{n}=a_{n-1}+a_{n-2}+a_{n-3}$ And: $a_1=1$ $a_2=1$ $a_3=1$ We evaluate: $a_4=a_3+a_2+a_1=1+1+1=3$ $a_5=a_4+a_3+a_2=3+1+1=5$
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