Jeremy:
Don't be silly. The model is overdetermined -- a and b "tradeoff" with each
other. e.g. for any solution (a,b), (a/k^m,b+m) for any m is also a
solution, where k = const (assuming I have correctly interpreted the model,
of course).
-- Bert
On Wed, Dec 19, 2012 at 11:59 AM, Jeremy Miles w
Could you provide the code that you're running, so we can see what
you're trying to do? Even better would be a repeatable example.
Jeremy
On 19 December 2012 09:42, Yann Labou wrote:
> Hey all,
>
> I'm trying to fit a non-linear model y ~ a * constant ^ b * x ^ c and
> estimates the paramaters
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