Answer
$a_1=-2$
$a_2=0$
$a_3=3$
$a_4=7$
$a_5=12$
Work Step by Step
If $a_n=n+a_{n-1}$ and $a_1=-2$, then
$a_2=2+a_1=2+(-2)=0$
$a_3=3+a_2=3+0=3$
$a_4=4+a_3=4+3=7$
$a_5=5+a_4=5+7=12$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 12 - Sequences; Induction; the Binomial Theorem - 12.1 Sequences - 12.1 Assess Your Understanding - Page 807: 37
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