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Shamsun Asked a Question
September 1, 2020 2:09 ampts 30 pts
39 LetA De an n x n matrix with real entries such that A? = A. If I denotes the n x n identity mati then show that rank(A - 1) = nullity (A). 39
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  • Piyush Best Answer
    PFA.
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  • Anonymous User thankyou
    see the attachments
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  • Piyush
    Please let me know if any step is unclear. I have used some simple facts.
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    Shamsun
    trace(A) =rank(A) ... how