Answered: 7. Give the two matrices, [1 2 3] A =…

7. Give the two matrices, [1 2 3] A = |1 1 2 and B= 2 1 2 0 1 2 [1 1 1 3 1 2 (a) Find det A, det B, det(AB), det(BA), det(5A), det AT and det(B®). (b) Find adj A and adj B.

College Algebra

7th Edition

ISBN:9781305115545

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter6: Matrices And Determinants

Section: Chapter Questions

Problem 7CC: If A and B are matrices with the same dimension and k is a real number, how do you find A+B and kA ?

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7. Give the two matrices,
[1 2 3]
A = |1 1 2 and B= 2 1 2
0 1 2
[1 1 1
3 1 2
(a) Find det A, det B, det(AB), det(BA), det(5A), det AT and det(B®).
(b) Find adj A and adj B.

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