Linear Algebra and Its Applications (5th Edition)

Published by Pearson
ISBN 10: 0-32198-238-X
ISBN 13: 978-0-32198-238-4

Chapter 1 - Linear Equations in Linear Algebra - 1.1 Exercises: 8

Answer

The solution set is (0,0,0).

Work Step by Step

Starting with the original matrix 1 -4 9 0 0 1 7 0 0 0 2 0 We do the following row operations: divide the last row by 2 1 -4 9 0 0 1 7 0 0 0 1 0 subtract 7 times row 3 from row 2 1 -4 0 0 0 1 0 0 0 0 1 0 add 4 times row 2 to row 1 1 0 0 0 0 1 0 0 0 0 1 0 And the solution set is the last entries in each row , in order.
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