Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 11 - Section 11.1 - Sequences and Summation Notation - Exercise Set: 5

Answer

$a_1 = -3 \\a_2 = 9 \\a_3 = -27 \\a_4 = 81$

Work Step by Step

To find the first four terms of the given sequence, substitute 1, 2, 3, and 4 to $n$, respectively, then simplify. $a_1 = (-3)^1 = -3 \\a_2 = (-3)^2 = (-3)(-3) = 9 \\a_3 = (-3)^{3} = (-3)(-3)(-3)=-27 \\a_4 = (-3)^4 = (-3)(-3)(-3)(-3)=81$
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