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Homework Help: Matrices question

  1. Apr 25, 2006 #1
    hi there,

    my teacher gave me the following question: 1. Evaluate AB

    A= (19 81)
    (2 10)

    B= (9 -6)
    (6 -7)

    The book i have tells me how to add multiply and subtract matrices, i dont understand what evaluate AB means, is it multiply>?

    Kind regards

  2. jcsd
  3. Apr 25, 2006 #2


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    Science Advisor
    Homework Helper

    "Evaluate AB" means "Multiply A by B".
  4. Apr 28, 2006 #3
    Whenever two letters are together like that it always means to multiply. AB = [tex] A \times B [/tex]
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