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Math Help - Matrix equations

  1. #1
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    Matrix equations

    Here are the questions at this link:
    Yfrog - namei

    Note that for a), the last part at the top is 4, I don't know why it came out a bit blurry.
    Oh yeah and those are equal signs not minuses in a) and b) :S
    Last edited by brumby_3; March 27th 2010 at 07:05 PM.
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  2. #2
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    Do you know how to multiply two matrices?

    \begin{bmatrix}2 \\ -4\end{bmatrix}\begin{bmatrix}x\end{bmatrix}= \begin{bmatrix}2x \\ -4x\end{bmatrix}.

    \begin{bmatrix}3 & -1 \\ 2 & 0\end{bmatrix}\begin{bmatrix}x \\ y\end{bmatrix}= \begin{bmatrix}3x- y \\ 2x \end{bmatrix}.
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  3. #3
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    Oh, is that all it's asking? Yes I know how to multiply matrix - so I don't even need to touch the right side of each matrix equaton, right?
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