all = [au 0 0 a22. A =

Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter2: Matrices
Section2.1: Operations With Matrices
Problem 77E
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2. Consider the matrix
0
4-[2]
A =
=
a22
where an a22. We wish to determine the set V of all 2 x 2 matrix B that commute
with matrix A, i.e., for which AB = BA. For example, the identity matrix I and the
matrix A itself are in V, since AI = IA and AA = AA.
(1) To find the general form of matrices in V
(2) Show how to obtain I and A from the general form you derived in (1).
Transcribed Image Text:2. Consider the matrix 0 4-[2] A = = a22 where an a22. We wish to determine the set V of all 2 x 2 matrix B that commute with matrix A, i.e., for which AB = BA. For example, the identity matrix I and the matrix A itself are in V, since AI = IA and AA = AA. (1) To find the general form of matrices in V (2) Show how to obtain I and A from the general form you derived in (1).
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