Discrete Mathematics with Applications 4th Edition

Published by Cengage Learning
ISBN 10: 0-49539-132-8
ISBN 13: 978-0-49539-132-6

Chapter 5 - Sequences, Mathematical Induction, and Recursion - Exercise Set 5.1: 10

Answer

$a_n = (-1)^{n+1}$

Work Step by Step

$a_0 = (-1)^{1} = -1$ $a_1 = (-1)^{2} = 1$ $a_2= (-1)^{3} = -1$ Seeing the pattern, $a_n$ should alternate between 1, -1
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