Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 11 - Further Topics in Algebra - 11.1 Sequences and Series - 11.1 Exercises - Page 1015: 59


$a_{1}=x_{1}=-2;$ $a_{2}=x_{2}=-1;$ $a_{3}=x_{3}=0;$ $a_{4}=x_{4}=1;$ $a_{5}=x_{5}=2$ $\sum ^{5}_{i=1}x_{i}=0$

Work Step by Step

$a_{1}=x_{1}=-2;$ $a_{2}=x_{2}=-1;$ $a_{3}=x_{3}=0;$ $a_{4}=x_{4}=1;$ $a_{5}=x_{5}=2$ $\Rightarrow \sum ^{5}_{i=1}x_{i}=a_{1}+a_{2}+a_{3}+a_{4}+a_{5}=x_{1}+x_{2}+x_{3}+x_{4}+x_{5}=-2+\left( -1\right) +\left( 0\right) +\left( 1\right) +\left( 2\right) =0$
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