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  • + 0 comments
    5
    40
    
  • + 0 comments

    Answer is :5 40

  • + 3 comments

    |2A| = 2^n * |A|, where n is the number of rows (or, equivalently, columns) of A.

    • + 2 comments

      you might find this set of examples useful.

      • + 0 comments

        ???

      • + 0 comments

        C'mon! The least you could do is define A^T and 2A in the problem!

    • + 1 comment

      Thanks for this. I am terribly late but can you refer me to some time of source or exercises where this is better explained,because I spent half an hour blidingly searching

      • + 0 comments

        Nothing specific that I know of, but any halfway decent linear algebra textbook should cover this. I'm sure there are many websites out there as well that discuss it.

    • + 0 comments

      I was confused thinking |A| was some matrix norm. It's determinant...

  • + 2 comments

    I think my answer is correct. Why wa is returned ...

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      Determinant of A is 5 for both A^T and 2A

    • + 1 comment

      Sorry for the late reply but you might find this set of examples useful.

      • + 0 comments

        They are NOT useful, because NOWHERE do I find A^T or 2A defined!

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