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May
17
awarded  Citizen Patrol
May
17
comment What's wrong with this linear program formulation?
I have added the variables and progressed on the problem. Now I have to solve an expanded program, but I can't find the pivot because $a$ is on the righthand side and I don't know the value of $a$. Does that mean I should have moved $a$ to the lefthand from the beginning?
May
16
revised What's wrong with this linear program formulation?
added 1386 characters in body
May
16
comment What's wrong with this linear program formulation?
Oooh, I see - so I need to add two artificial variables, since I already have other two, right?
May
16
asked What's wrong with this linear program formulation?
May
16
asked What is wrong with this linear program $\max z = 3x_1+2x_2$?
May
15
asked Solving $\max z (3x_1 - x_2)$ linear program
May
11
comment How can I verify my linear program solutions?
@NigelOvermars: Somewhat - you kind of draw a polygon based on the constraints and inspect to see what would be the maximum and minimum values? However, I may be wrong, but doesn't this only work if you are using two variables? Three or more wouldn't be possible I think?
May
11
comment How can I verify my linear program solutions?
It puzzles me though - I can't quite find the flaw in the procedure.
May
11
comment How can I verify my linear program solutions?
@NigelOvermars: Good thing I'm seeking a way to verify those answers :D
May
11
asked How can I verify my linear program solutions?
May
11
comment What to do if the righthand of a constraint is a variable when solving Linear programs?
Ha... Goddammit.
May
11
accepted What to do if the righthand of a constraint is a variable when solving Linear programs?
May
11
accepted About canonical linear programs.
May
11
asked What to do if the righthand of a constraint is a variable when solving Linear programs?
May
9
comment How to use the simplex method for linear programs?
@calculus: Well I'll be damned, I didn't know about that at all. So basically, the last row can only be modified by the pivot row? What about vice-versa - can the last row modify a row that is not the pivot, like $r_4 + r_1$?
May
8
comment How to use the simplex method for linear programs?
@calculus: Hm, actually, I don't get it lol. What is the problem with that? This is probably what I'm missing.
May
8
asked How to use the simplex method for linear programs?
May
5
accepted Combinations for 15 equivalent objects among 3 places.
May
5
comment Combinations for 15 equivalent objects among 3 places.
@Awesome: Yeah, it's ok