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Re: Hold problems with FindRoot


On 5/14/05 at 4:57 AM, lists at bjornerstedt.org (Jonas Björnerstedt)
wrote:

>I have problems getting FindRoot to evaluate the equations it
>evaluates, despite using Evaluate on the equations. I have a rather
>complex function f[x,y] that works correctly with individual values
>x and y. Evaluating the following expression does not work however.

>FindRoot[Evaluate[f[x,y]==0],{{x,1},{y,1}}]

>When evaluating, I get similar errors as when I evaluate f without
>inserting values for x and y. I can also do a Plot3D on f without
>using Evaluate.

>Does anybody have an idea what the problem is?

There is no way for anyone to determine the nature of the problem when you have not included details of f[x,y].
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