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function y = fun(x)
y = -1/(1-x*x);
endfunction
x1 = [0];
x2 = [1000];
//Output
//
//Error in step computation (regularization becomes too large?)!
// lambda =
//
// lower: [0x0 constant]
// upper: [0x0 constant]
// output =
//
// Iterations: 108
// Cpu_Time: 0.064
// Message: "Error in step computation (regularization becomes too large?)!"
// exitflag =
//
// 10
// fopt =
//
// []
// xopt =
//
// []
[xopt,fopt,exitflag,output,lambda] = fminbnd (fun, x1, x2)
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