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Math Help - simplex method problem

  1. #1
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    Mar 2012
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    new york
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    simplex method problem

    i got a question like this:

    Use the technique developed in this section to solve the minimization problem.
    Minimize C=x-3y+z
    subject to x-2y+3z<=30
    2x+y-2z<=45
    2x+y+3z<=40
    x>=0, y>=0, z>=0

    so i try to use simplex method to solve it, but...

    1 -2 3 1 0 0 0 30
    2 1 -2 0 1 0 0 45
    2 1 3 0 0 1 0 60
    -1 -3 -1 0 0 0 1 0

    am i doing right to set up the initial simplex tableau?

    i dont know what i should do with this: C=x-3y+z

    also, what pivot element should i choose?
    if the question like this:

    2 1 3 1 0 0 45
    4 1 5 0 1 0 45
    -1 -2 -1 0 0 1 100
    thank you so much
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  2. #2
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    Re: simplex method problem

    sorry for that, i posted it on the wrong place
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