> I am trying to do some D o E. I would like to find
> the optima
> (maxima) of a 2 dimensional lm with quadratic terms.
> I'm sure there is a really simple solution but i can't find it.
At least part of this problem is solved by the rsm package; that fits a
quadratic response surface and provides the location of the maximum together
with some diagnostics.
Steve Ellison
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