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: 20

Answer

(7, 0, -4)

Work Step by Step

$u−v+2w=(1,2,3)−(2,2,−1)+2\times(4,0,-4)$ $=(1,2,3)−(2,2,−1)+(8,0,-8)$ $=(1−2+8,2−2+0,3−(−1)-8)$ $=(7, 0, -4)$
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