Question
Asked Nov 12, 2019
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linear algebra

(2) (Section 7.1 # 4) Find det (A-) where:
-2 -3 2
A =
1
-1
1
1
(Hint:Use a property of the determinant.)
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(2) (Section 7.1 # 4) Find det (A-) where: -2 -3 2 A = 1 -1 1 1 (Hint:Use a property of the determinant.)

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Expert Answer

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Step 2

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-2 -3 21 0 0 3 0 1 0 [AI4 1 10 0 -1 1 1 -11 0 1 -1 -10 0 1 1 3 0 -2 -3 2 1 0 0 1 -1 -10 0 -1] R2R-4R 7 1 0 5 4 0 1 5 5 R3R+2R 0 -5 0 1 0-2 1 0 5 1 0 RRR R3R5R 7 1 4 0 0 1 1 1 2 7 7 7 2 10 0 1 11 35 7 35 0 1 0 5 5 R2R 1 0 0 1 7

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