Let E be the 3 x 3 matrix that corresponds to the row operation R3 R3 + 4R (a) Find E-1. E-1 = -37 39 (b) Find EA where A = 31 44 21 39 26 -38 EA =

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter9: Systems Of Equations And Inequalities
Section9.8: Determinants
Problem 34E
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Let E be the 3 x 3 matrix that corresponds to the row operation R3 = R3 + 4R1
(a) Find E-1.
E-1 =
-37 39
(b) Find EA where A =
31
44
21
39 26 -38
EA =
Transcribed Image Text:Let E be the 3 x 3 matrix that corresponds to the row operation R3 = R3 + 4R1 (a) Find E-1. E-1 = -37 39 (b) Find EA where A = 31 44 21 39 26 -38 EA =
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