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Math Help - Linear Algebra Matrix Check

  1. #1
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    Linear Algebra Matrix Check

    I've just worked out a matrix, and I was looking for somebody to check to see if its right, just so I can have some piece of mind...

    I start with:
    2 2 2 0
    -2 5 2 1
    8 1 4 -1

    And I believe the Gauss-Jordan Solution is:
    1 0 -3/7 -1/4
    0 1 4/7 1/7
    0 0 0 0

    Am I right? Or did I go wrong somewhere?
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  2. #2
    Eater of Worlds
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    That is correct. Good work. But notice the 0's in the last row?. What does that tell you?.
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  3. #3
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    I just did it myself, got the exact same solution.

    Bobak
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  4. #4
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    That is correct. Good work. But notice the 0's in the last row?. What does that tell you?
    That x3=0? I'm not sure what you mean...
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