I am studying for my Linear Programming exam. One of the questions is "4 possible cases for primal and dual linear programming problems"? Neither of my mates knows what it is about. We've send an email to our lecturer but haven't recieved an answer. I also surfed the net but in vain. May be you know what could this question be about?
2026-04-02 19:11:56.1775157116
What are "4 possible cases for primal and dual linear programming problems"?
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Your quoted phrase is not a question, but I suspect it might be referring to the possible combinations of optimal/infeasible/unbounded for primal and dual problems. Only 4 of the 9 pairs are possible. See, for example, page 60 of Chvatal's Linear Programming (1983).