Posted by mike on Monday, December 28, 2009 at 11:20am.
3x[1]+x[2]<=12,x[1]+x[2]<=15,z=2x[1]+x[2]
I need the simplex for this problem. I have the right answer but keep coming up with a differant answer. This in our book as a practice problem.

Algebra  MathMate, Tuesday, December 29, 2009 at 6:13pm
Do you have the answer?
Since you have not given the extra constraints x_{1} > 0 and x_{2} > 0, you will get x1=1.5 and x2=16.5, which is where the first two constraints intersect.

Linear Programming  corr  MathMate, Tuesday, December 29, 2009 at 6:16pm
Possible extra constraints:
x_{1} ≥ 0
x_{2} ≥ 0
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