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Linear algebra problem

  1. Jan 27, 2013 #1
    1. The problem statement, all variables and given/known data
    The question and my work is in the image it is pretty much to solve for X.
    Solve the following matrix equation
    23if1tx.jpg
    Not quite sure how I keep messing this problem up.

    2. Relevant equations



    3. The attempt at a solution
     
    Last edited: Jan 27, 2013
  2. jcsd
  3. Jan 27, 2013 #2

    Mark44

    Staff: Mentor

    The image you posted was too large (1599 pixels x 956 pixels), so I deleted it. Please reformat your image so that it is about 800 x 600.

    Also, include the given information, preferably as text in this window.
     
  4. Jan 27, 2013 #3
    Fixed.
     
  5. Jan 27, 2013 #4

    Mark44

    Staff: Mentor

    Much better! Thank you.
     
  6. Jan 27, 2013 #5

    Mark44

    Staff: Mentor

    It looks like you have a mistake right at the beginning. I'm assuming that you are given A and B.

    If so, A - I =
    $$ \begin{bmatrix} 5 - 1 & 3 \\ 3 & 6 - 1\end{bmatrix} = \begin{bmatrix} 4 & 3 \\ 3 & 5\end{bmatrix}$$
     
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