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Math Help - Gausselimination

  1. #1
    Junior Member
    Joined
    Aug 2009
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    47

    Cool Gausselimination

    Solve the following linear systems

    −3x+2y+z=−3
    x+−2y+z=1
    x+y−z=2


    z=?
    x=?
    y=?
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  2. #2
    MHF Contributor
    Joined
    Sep 2008
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    West Malaysia
    Posts
    1,261
    Quote Originally Posted by sf1903 View Post
    Solve the following linear systems

    −3x+2y+z=−3
    x+−2y+z=1
    x+y−z=2


    z=?
    x=?
    y=?
    HI

    -3x+2y+z=-3 ----- 1

    x-2y+z=1 ------- 2

    x+y-z=2  -------- 3

    2+3 gives 2x-y=3 ----- 4

    1-2 gives -4x+4y=-4 \Rightarrow -x+y=-1 ---- 5

    4+5 gives x=2 so now you can continue to look for y and z.
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  3. #3
    Senior Member pacman's Avatar
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