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// Example with objective function and inequality constraints function y=fun(x) y=-sum(exp(x)) endfunction x0 = [repmat(1,1,20)]; A=[-1,-5,-3 repmat(0,1,17); -0.5,-2.5 -1.5 repmat(0,1,17);]; b=[-100 -50]'; lb = repmat(0,1,20); ub = repmat(10,1,20); [xopt,fopt,exitflag,output,lambda,gradient,hessian] = fmincon (fun, x0,A,b,[],[],lb,ub)