7. (a) EA = B (c) EA = C

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter3: Matrices
Section3.4: The Lu Factorization
Problem 17EQ
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In Exercises 7-8, use the following matrices and find an ele-
mentary matrix E that satisfies the stated equation.
3
A = |2 -7
57
B =|2 -7
4
8
1
-1
8
5
3
4
3
4
8
1
C = |2
-7
-1
D =
-6 21
2 -7
3
3
4
8.
5
F = | 8 1
3 4
7. (a) EA = B
(bEB =A
(c) EA = C
(d) E A
en
Transcribed Image Text:In Exercises 7-8, use the following matrices and find an ele- mentary matrix E that satisfies the stated equation. 3 A = |2 -7 57 B =|2 -7 4 8 1 -1 8 5 3 4 3 4 8 1 C = |2 -7 -1 D = -6 21 2 -7 3 3 4 8. 5 F = | 8 1 3 4 7. (a) EA = B (bEB =A (c) EA = C (d) E A en
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