I am trying to run a curve fit on a regression.  The problem is I need to do
a weighted curve fitting.  Also I believe the best fitting curve is likely
to be a logarithmic one, but I also need to figure out how to adjust the
properties of different logarithmic curves (different bases, rates of
decline.  I have only seen weighted curve fitting of any type done in
mathworks,
any ideas?

Many thanks

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