College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 8 - Summary, Review, and Test - Review Exercises - Page 788: 14

Answer

See below.

Work Step by Step

$a_n=\frac{3}{2}-\frac{1}{2}(n-1)$, thus $a_1=\frac{3}{2}-\frac{1}{2}(1-1)=\frac{3}{2}-\frac{1}{2}\cdot0=\frac{3}{2}-0=\frac{3}{2}$ $a_2=\frac{3}{2}-\frac{1}{2}(2-1)=\frac{3}{2}-\frac{1}{2}\cdot1=\frac{3}{2}-\frac{1}{2}=1$ $a_3=\frac{3}{2}-\frac{1}{2}(3-1)=\frac{3}{2}-\frac{1}{2}\cdot2=\frac{3}{2}-\frac{2}{2}=\frac{1}{2}$ $a_4=\frac{3}{2}-\frac{1}{2}(4-1)=\frac{3}{2}-\frac{1}{2}\cdot3=\frac{3}{2}-\frac{3}{2}=0$ $a_5=\frac{3}{2}-\frac{1}{2}(5-1)=\frac{3}{2}-\frac{1}{2}\cdot4=\frac{3}{2}-\frac{4}{2}=-\frac{1}{2}$ $a_6=\frac{3}{2}-\frac{1}{2}(6-1)=\frac{3}{2}-\frac{1}{2}\cdot5=\frac{3}{2}-\frac{5}{2}=-1$
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