HI All, I am unable to solve a optimization Problem Please Help Me out of this to solve. The Optimization problem is as follows :- My objective function is linear and one of the constraint is quadratic.
Min z = 5 * X1 + 9* X2 + 7.15 *X3 + 2 * X4 subject to X1 + X2 + X3 +X4 = 9 X1 + X4 < = 6.55 X3(X3 - 3.5) >=0 X1,X2,X3,X4 >=0 Now the problem is how to solve this kind of problem. Which package should be used to handle such problems. Please explain with an example. Another problem is that I have to cases to be solve in this problem. case 1:-) If X3 = 0 case 2 :-) If X3 > 0 then X3 > 3.6 I want to handle both this case in one problem so the quadratic constraints is written The thing is that I want to evaluate my objective function for both cases and which ever is optimum that solution i need, Here I don't want to use the If Else condition and repeat the program. IS there any other better way in which i could solve this problem? If not please try to provide me the solution for my original problem having a quadratic constraint. -- View this message in context: http://www.nabble.com/Quadratic-Constraints-tp25528480p25528480.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.