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Multiple solutions of e.g. transcendental equations in C# http://forum.alglib.net/viewtopic.php?f=2&t=413 
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Author:  Sergey.Bochkanov [ Tue Aug 16, 2011 7:47 pm ] 
Post subject:  Re: Multiple solutions of e.g. transcendental equations in C 
I think that you can do as follows: 1. get one solution 2. modify your problem by adding barrier function around this solution (something like bump function, I suppose) 3. go back to (1) The problem is how to choose barrier width  it seems to be too problemdependent. And you may need multistart in order to converge to some hardtofind solutions. 
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