2 -3 Let A = 1 and B =| 5 4 2 2 (a) Verify that AB = 3a1 + 5a2 + 2a3, where a; is the jth column of A for j = 1, 2, 3. (row1(A))B (b) Verify that AB = (row2(A))B_

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.3: Algebraic Expressions
Problem 46E
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Question
2 -3
Let A =
1
and B =| 5
4
2
2
(a) Verify that AB = 3a1 + 5a2 + 2a3, where a; is the
jth column of A for j = 1, 2, 3.
(row1(A))B
(b) Verify that AB =
(row2(A))B_
Transcribed Image Text:2 -3 Let A = 1 and B =| 5 4 2 2 (a) Verify that AB = 3a1 + 5a2 + 2a3, where a; is the jth column of A for j = 1, 2, 3. (row1(A))B (b) Verify that AB = (row2(A))B_
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