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How do I find the values of b and y?[A][b = [3 y] 4]

  1. Apr 22, 2008 #1
    How do I find the values of b and y?
    [A][b = [3
    y] 4]
     
  2. jcsd
  3. Apr 22, 2008 #2

    Dick

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    You are going to format that better, aren't you?
     
  4. Apr 23, 2008 #3
    [A][b y]=[3 4]
    y is below b
    4 is below 3
     
  5. Apr 23, 2008 #4

    Dick

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    And what is A?
     
  6. Apr 23, 2008 #5

    HallsofIvy

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    That's a lot like asking: "What is Ax= 4?" without telling us what A is. The only possible answer is "x= 4/A" or "X= A-14".

    The only possible answer to your question is
    [tex]\left[\begin{array}{c} b \\ y \end{array}\right]= A^{-1}\left[\begin{array}{c} 3 \\ 4\end{array}\right][/tex]
    until we know what "A" is.

    Of course, if the problem really was what you said, that may be the correct answer!
     
  7. Apr 24, 2008 #6
    thats what i thought. it was a question in an exam i recently had.
     
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