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+// Example with objective function, inequality constraints and non linear constraints
+
+function y=fun(x)
+ y = exp(prod(x))
+endfunction
+
+x0 = repmat(1,1,20);
+lb = repmat(0,1,20);
+
+A=[-1,-5,-3 repmat(0,1,17); -0.5,-2.5 -1.5 repmat(0,1,17);];
+b=[-100 -50]';
+
+//Nonlinear constraints
+function [c,ceq]=nlc(x)
+ c = [ sum(2*cos(x) + log(x)) - 1];
+ ceq = [];
+endfunction
+
+[xopt,fopt,exitflag,output,lambda,gradient,hessian] = fmincon (fun, x0,A,b,[],[],lb,[],nlc)