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