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Solving Linear inequalities using graphical method vineeth 02/11/05
    I am having trouble solving 3 variable inequalites using graphs. can anyone please help me.

    Xi>=0 for i=1,2,3
    X1+2X2+3X3<=12
    4X1+X2+X3<=8

    The objective functions are
    maximize 3X1+2X2+X3
    minimize 2X1+3X2+4X3

      Clarification/Follow-up by aalkhodor on 12/10/06 4:19 pm:
      You have to find the intersection points by solving
      2X2+3X3=12
      X2+X3=8


      X1+2X2=12
      4X1+X2=8

      X1+3X3=12
      4X1+X3=8

      This can be solved easily by elemination or from the site :2Unknown Calculator.htm
      Then substitute in the objective function to obtain minimum or maximum value.

 
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