Differential Equations and Linear Algebra (4th Edition)

Published by Pearson
ISBN 10: 0-32196-467-5
ISBN 13: 978-0-32196-467-0

Chapter 5 - Inner Product Spaces - 5.2 Orthogonal Sets of Vectors and Orthogonal Projections - Problems - Page 360: 4

Answer

See answer below

Work Step by Step

We are given $S=\{(1,2,-1,0),(1,0,1,2),(-1,1,1,0),(1,-1,-1,0)\}$ in $R^4$ We will check: $(v_1,v_2)==(-1).1+1.(-1)+1.(-1)_0=-3 \ne 0$ Hence, $S$ is not an orthogonal set in $R^4$
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