Dear Ramdani ZOUBIR ,

I am not sure there is a specific code that deals with optimization problems that have "quadratic constrains". In fact, there are some codes that can deal in general with "non-linear constraints" so you can use it for your specific case.

Also, what Richard Epenoy suggested contains some examples with quadratic constraints been used several times, so you can get what you exactly ask for.

Regards

Ali

Hi, you can find the syntax of Cplexqcp on the following page:

https://www.ibm.com/support/knowledgecenter/SSSA5P_12.5.1/ilog.odms.cplex.help/refmatlabcplex/html/cplexqcp-m.html

In fact, the quadratic constraints are modeled via a unique matrix Q and a vector l in the documentation. I think that in case of multiple quadratic constraints you should use fmincon instead. Best

Dear Ramdani ZOUBIR ,

I am not sure there is a specific code that deals with optimization problems that have "quadratic constrains". In fact, there are some codes that can deal in general with "non-linear constraints" so you can use it for your specific case.

Also, what Richard Epenoy suggested contains some examples with quadratic constraints been used several times, so you can get what you exactly ask for.

Regards

Ali

Dear Ali Hassan Ali,

thank you very much for your help and your suggestions are relevant. Indeed, I work on the multiobjective optimization nolinear programming, I want tu use a quadratical approximation of constraint functions in the trust region methods.

Kind regards.