How would you make this statement, AB=BA true

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Homework Statement



If A is a matrix, find B, a matrix so that

AB=BA


Homework Equations



?

The Attempt at a Solution



Solve for inverse?
 

Discussion

Sasor said:

Homework Statement



If A is a matrix, find B, a matrix so that

AB=BA


Homework Equations



?

The Attempt at a Solution



Solve for inverse?

B=I (the identity) always works. Or B=A. Or B=A^2. Or any combination of powers of A.
 

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