Elementary Linear Algebra 7th Edition

Published by Cengage Learning
ISBN 10: 1-13311-087-8
ISBN 13: 978-1-13311-087-3

Chapter 4 - Vector Spaces - 4.1 Vectors in Rn - 4.1 Exercises - Page 153: 19


$u-v=(-1,0,4)$ $v-u=(1,0,-4)$

Work Step by Step

$u-v=(1,2,3)-(2,2,-1)$ $=(1-2,2-2,3-(-1))$ $=(-1,0,4)$ $v-u=(2,2,-1)-(1,2,3)$ $=(2-1,2-2,(-1)-3)$ $=(1,0,-4)$
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