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+// Example with objective function and inequality constraints
+
+function y=fun(x)
+ y=0
+ for i = 1:20
+ y = y + exp(x(i))
+ end
+endfunction
+
+x0 = repmat(1,1,20);
+lb = repmat(0,1,20);
+
+//Nonlinear constraints
+function [c,ceq]=nlc(x)
+c = [- 0.5*exp(x(1)) - 2.5*exp(x(2)) - 1.5*exp(x(3)) + 50];
+ceq = [];
+endfunction
+
+[xopt,fopt,exitflag,output,lambda,gradient,hessian] = fmincon (fun, x0,[],[],[],[],lb,[],nlc)