MathGroup Archive 2008

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Extrema of 2D Interpolating function

Hi, I'd like to compute the minima  and the saddle points of a 2D interpolating function f[x,y] obtained from a list of points with mathematica 6.0 (if possible in a specified x-y range0. The Nsolve standard routines do not seem to work in this case. Can anyone help? Thanks in advance.

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