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Re: FindRoot with 2 variables plus parameters

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  • Subject: [mg117734] Re: FindRoot with 2 variables plus parameters
  • From: DrMajorBob <btreat1 at>
  • Date: Wed, 30 Mar 2011 04:16:08 -0500 (EST)

We'd need to know f and g to have useful suggestions.

If there's anything "messy" about them, symbolic solutions won't be  


On Tue, 29 Mar 2011 06:58:14 -0500, Alessandro Tavoni  
<alessandro.tavoni at> wrote:

> Hi all,
> I have a hard time finding roots to the following system of equations
> in 2 unknowns (p,q):
> eq1 = Pu == f(q, alfa, beta)
> eq2 = Ql == g(p, alfa, beta)
> If the 2 parameters (alfa, beta) are given numerical values
> beforehand, no issue. But I would like to retain the parameters in
> symbolic form, so as to later minimize the distance of Pu and Ql from
> two numbers.
> I have only managed to work around this issue by creating a Table for
> each variable given various parameter variables so to compare it to a
> Table filled with the corresponding number. This method, however,
> seems rather cumbersome, and would rather use Nminimize if possible.
> Thanks!
> Alex

DrMajorBob at

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