minimum of constrained multivariable function

Hello guys, I'm a mechanical engineer and I'm executing the constrained optimization problems. In the last week I ran into a problem that I could not provide a solution, so I decided to ask your community for advice. I have to solve a constrained optimization problem and I'm using the 'fmincon', unfortunately I should impose more than one equality in the non-linear constraints (Ceq). But matlab allows me to impose only one constraint for both non-linear equalities and for inequalities, someone has already come across this problem? As you have by-passed the problem? Thank you very much in advance for both the responses and for the attention.

Answer 1

[Matt J]

But matlab allows me to impose only one constraint for both non-linear equalities and for inequalities,

Not true. Both c and ceq can be vectors.

[Matt J]

Here is an example of setting up multiple nonlinear constraints,

http://www.mathworks.com/help/optim/ug/writing-constraints.html#brhkghv-16

Answer 2

[Andrea Caffagni]

Thank you very much Matt, I had misunderstood the instructions in the manual of matlab. Now I try to rewrite (Ceq) as a vector. best regards elcaffo