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General nonlinear mixed integer problems

Question asked by on Feb 4, 2016
Latest reply on Feb 4, 2016 by



I'm trying to solve a nonlinear mixed integer problem (quadratic objective function, quadratic constrains, non convex, mixed integer) using mmxnlp, but I'm getting a feasible solution that is not optimal, I found a solution that is better that the one Xpress is giving. Can Xpress solve this kind of problems? If yes, why am I getting this wrong solution?


Thank you very much.