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OpenStudy (usukidoll):
Determine all 2 x 2 matrices A such that AB=BA for any 2 x 2 matrix B. State the answer and prove it.
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OpenStudy (usukidoll):
Given: A and B are n x n matrices with two rows and two columns. |dw:1359857603935:dw|
OpenStudy (usukidoll):
We need to use matrix multiplication for this problem. Therefore, AB=BA |dw:1359857669543:dw|
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