The determinant of the matrix 7 -5 -3 A = -7 -2 -7 9. is 345 and its inverse is b12 b13 b21 b22 b23 [b31 b32 b33,
The determinant of the matrix 7 -5 -3 A = -7 -2 -7 9. is 345 and its inverse is b12 b13 b21 b22 b23 [b31 b32 b33,
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter9: Systems Of Equations And Inequalities
Section9.7: The Inverse Of A Matrix
Problem 6E
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Transcribed Image Text:Inverses of Matrices
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8.
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The determinant of the matrix
-5
A =
-7
-2
-7
6.
is 345
and its inverse is
[b1 b12 bi13
= | b21 b22 b23
[b31 b32 b33
where
8.
bu =
345
4.
b12
%3D
69
42°F
V
Transcribed Image Text:Inverses of Matrices
OPEN
Turned in automatic
345
4
b12
69
29
b13 =
345
91
b21
%3D
345
11
b22 =
69
28
b23 =
345
6.
b31 =
115
3
b32
%3D
23
7.
b33
%3D
145
49°F
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