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MathGroup Archive 2004

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Re: Recursion Limit & Symbolic Differentiation

  • To: mathgroup at
  • Subject: [mg52272] Re: Recursion Limit & Symbolic Differentiation
  • From: Peter Pein <petsie at>
  • Date: Sat, 20 Nov 2004 03:41:46 -0500 (EST)
  • References: <cnhglm$af5$>
  • Sender: owner-wri-mathgroup at

Erin wrote:
> Hi,
> I'm new to Mathemtica and I'm trying to differentiate a multi-variable
> function 
> f(x,y,z). When doing so I get a recusion limit 256 reached message. 
> When examining my equations, I don't see recursion in the expressions.
> It should be simple substitution of one expression into the other.
> (Its just easier for me to write it that way). 
> How do I know if this is a valid message, and how do I know if my
> expressions will actually be solved / simplified by Mathematica if I
> increase the recursion limit?
> I have 2GB RAM and Mathematica fills it, then the Kernel runs out of
> memory and stops trying to solve the problem. 
> Thanks.
It would help us to help you, if you sent the definition of the function you're 
trying to differentiate...
Peter Pein
10245 Berlin

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