A18.3 Note that if A and B are two diagonal matrices then AB = BA. Give an example of 2 x 2 matrices A and B which are non-diagonal and not multiples of each other, such that AB = BA. Explain and prove that it works.

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter6: Linear Systems
Section6.5: Determinants
Problem 82E: Use an example chosen from 22 matrices to show that for nn matrices A and B,ABBA but AB=BA.
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A18.3 Note that if A and B are two diagonal matrices then AB = BA. Give an example
of 2 x 2 matrices A and B which are non-diagonal and not multiples of each other, such that
AB = BA. Explain and prove that it works.
%3D
Transcribed Image Text:A18.3 Note that if A and B are two diagonal matrices then AB = BA. Give an example of 2 x 2 matrices A and B which are non-diagonal and not multiples of each other, such that AB = BA. Explain and prove that it works. %3D
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