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Math Help - Understanding Matrix Suffix Notation

  1. #1
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    Understanding Matrix Suffix Notation

    I'm having trouble interpreting matrices represented in suffix notation. For example, I am given that the matrices A, B and x have elements a(ij) b(ij) and x(i) respectively. I then have to write down the matrix represented by


    [Edit: Latex corrected]
    How do I work out what this summation represents.
    Last edited by StaryNight; May 9th 2011 at 09:25 AM.
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  2. #2
    Senior Member Sambit's Avatar
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    Quote Originally Posted by StaryNight View Post
    I'm having trouble interpreting matrices represented in suffix notation. For example, I am given that the matrices A, B and x have elements a(ij) b(ij) and x(i) respectively. I then have to write down the matrix represented by



    How do I work out what this summation represents.
    I don't think your notations are correct.

    First of all, you have a_{ij} and x_i then where does this x_{ij} come from?

    Secondly, I don't know what k represents in b_{kj}.

    Lastly, the suffix in x_{xi} too has no meaning.
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  3. #3
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    Quote Originally Posted by Sambit View Post
    I don't think your notations are correct.

    First of all, you have a_{ij} and x_i then where does this x_{ij} come from?

    Secondly, I don't know what k represents in b_{kj}.

    Lastly, the suffix in x_{xi} too has no meaning.
    Apologies, I managed to make a couple of mistakes doing the Latex. I've corrected my original post.
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