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 11.3 - Geometric Sequences and Series - Exercise Set - Page 854: 15


$a_1=-\frac{1}{16} \\a_2=\frac{1}{4} \\a_3=-1 \\a_4=4 \\a_5=-16$

Work Step by Step

Multiply the common ratio to get the next term to obtain: $a_1=-\frac{1}{16} \\a_2=-\frac{1}{16}(-4) = \frac{4}{16} = \frac{1}{4} \\a_3=\frac{1}{4}(-4)=-1 \\a_4=-1(-4)=4 \\a_5=4(-4) = -16$
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