Answer
$a_n=a_1r^{n-1}$
Work Step by Step
$a_2=a_1r=a_1r^{2-1}$
$a_3=a_2r=a_1r^{3-1}$
$a_4=a_3r=a_1r^{4-1}$
...
$a_n=a_{n-1}r=a_1r^{n-1}$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 11 - 11.3 - Geometric Sequences and Series - 11.3 Exercises - Page 795: 2
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