SOLUTION: 2x2 matrix A with the property A2=A A can not =I or 0

SOLUTION: 2x2 matrix A with the property A2=A A can not =I or 0

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Question 230595: 2x2 matrix A with the property A2=A A can not =I or 0
Answer by user_dude2008(1862) (Show Source): You can put this solution on YOUR website!
Let

So

where

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