Let A = (a) Find the determinant of A. det (A) = 63 C= 9 9 -5 2 (b) Find the matrix of cofactors of A. adj (A)= 2 (c) Find the adjoint of A. A-¹ = 9 (d) Find the inverse of A. of -9 3

Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter3: Determinants
Section3.CR: Review Exercises
Problem 47CR
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Solve for c , A ,A^-1

Let A =
(a) Find the determinant of A.
det (A) = 63
99
L-5 2
(b) Find the matrix of cofactors of A.
adj(A)=
2
(c) Find the adjoint of A.
A-¹_
9
(d) Find the inverse of A.
-9
3
D
A
Transcribed Image Text:Let A = (a) Find the determinant of A. det (A) = 63 99 L-5 2 (b) Find the matrix of cofactors of A. adj(A)= 2 (c) Find the adjoint of A. A-¹_ 9 (d) Find the inverse of A. -9 3 D A
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