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Math Help - matrix question 2

  1. #1
    Faz
    Faz is offline
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    matrix question 2

    given matrix A =

    1st row 2 1 0
    2nd row 3 1 2
    3rd row 1 0 5

    a)write matrix 3A
    plse chk my answer;

    1st row 6 3 0
    2nd row 9 3 6
    3rd row 3 0 15


    b)find the det A by expanding by row 1.
    my ans:-3

    plse check for me..
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  2. #2
    Rhymes with Orange Chris L T521's Avatar
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    Quote Originally Posted by Faz View Post
    given matrix A =

    1st row 2 1 0
    2nd row 3 1 2
    3rd row 1 0 5

    a)write matrix 3A
    plse chk my answer;

    1st row 6 3 0
    2nd row 9 3 6
    3rd row 3 0 15



    b)find the det A by expanding by row 1.
    my ans:-3

    plse check for me..
    Follow Math Help Forum on Facebook and Google+

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