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// Example with objective function and inequality constraints function y=fun(x) y=sum(exp(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); [xopt,fopt,exitflag,output,lambda,gradient,hessian] = fmincon (fun, x0,A,b,[],[],lb,[])