Answer
$a_n=(-1)^{n+1}n$
Work Step by Step
If we look at the pattern:
$ 1, -2, 3, -4, ...$
$(-1)^2(1), (-1)^3(2), (-1)^4(3), (-1)^5(4), ...$
Hence, the nth term in the sequence is:
$a_n=(-1)^{n+1}n$
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 14 - Sequences, Series, and the Binomial Theorem - 14.1 Sequences and Series - 14.1 Exercise Set - Page 894: 39
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter 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.
