What is a appropriate method to maximize function subject to nonlinear equality constraint? can we use fmincon?

I want to maximize a function subject to nonlinear equality constraint, I wonder that fmincon can use with this problem or not? as we know fmincon is used to minimize the functions.

Answer 1

[Walter Roberson]

Yes, you can use a nonlinear constaint; see http://www.mathworks.com/help/optim/ug/fmincon.html#inputarg_nonlcon

Answer 2

[Alan Weiss]

Perhaps Walter's answer satisfied you, but it seems to me the question was how to maximize rather than minimize a function, subject to nonlinear constraints. The documentation describes how to maximize: all you do is minimize the negative of your objective function. See the documentation for details.

Alan Weiss

MATLAB mathematical toolbox documentation

[Walter Roberson]

I missed that, but yes, this is what should be done to maximize a function.