Nonlinear Optimization in Mathcad 15

[HusseinNaserald]

Hello,

I am using Mathcad 15 on Win 7 X32. I work a lot with (engineering) optimization problems, most of which are nonlinear. in most of the cases the solution converges to a solution that is not global optimum and this is typical. See for example the following problem:

My question is if you have some tips that can help to find the optimal global solution.

thanks,

Hussein

[AlanStevens]

Hussein Naseraldin wrote:

Hello,

I am using Mathcad 15 on Win 7 X32. I work a lot with (engineering) optimization problems, most of which are nonlinear. in most of the cases the solution converges to a solution that is not global optimum and this is typical. See for example the following problem:

My question is if you have some tips that can help to find the optimal global solution.

thanks,

Hussein

Try an initial guess that complies with the constraints you specify within the solve block!

Alternatively, right-click on Maximize, choose Non-linear, Advanced Options and change Derivative estimation from Central to Forward.

Alan