Answer
dim H = 2.
Work Step by Step
By row reducing the matrix whose columns are the 5 vectors has 2 pivot columns. This means the first two vectors form a basis for the column space. dim H = 2.
Linear Algebra and Its Applications (5th Edition)
by Lay, David C.; Lay, Steven R.; McDonald, Judi J.
Published by
Pearson
ISBN 10:
032198238X
ISBN 13:
978-0-32198-238-4
Chapter 2 - Matrix Algebra - 2.9 Exercises - Page 160: 14
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