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Math Help - matrices

  1. #1
    Newbie
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    matrices

    im pretty sure this cant be solved, but im not for sure
    im think that i need to take the transpose of B, but im not sure that it would be correct
    any help would be great

    A=[1 -4]

    B=
    |-2 1|
    | 0 1|
    |-5 0|


    C = A x B

    i dont know how to type matrices on a computer but i tried
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  2. #2
    MHF Contributor
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    You cannot multiply A x B.
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  3. #3
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    You can only multiply matrices when the rows of matrix A is the same as the columns in matrix B
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  4. #4
    MHF Contributor

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    Quote Originally Posted by jasimmons86 View Post
    im pretty sure this cant be solved, but im not for sure
    im think that i need to take the transpose of B, but im not sure that it would be correct
    any help would be great

    A=[1 -4]

    B=
    |-2 1|
    | 0 1|
    |-5 0|


    C = A x B

    i dont know how to type matrices on a computer but i tried
    Since you say "I need to take the transpose of B" do you mean: C= AB^T?

    AB^T= \begin{bmatrix}1 & -4\end{bmatrix}\begin{bmatrix}-2 & 0 & 5 \\ 1 & 1 & 0\end{bmatrix}.
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