Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2005
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2005

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Hold problems with FindRoot

  • To: mathgroup at smc.vnet.net
  • Subject: [mg57090] Re: Hold problems with FindRoot
  • From: Bill Rowe <readnewsciv at earthlink.net>
  • Date: Sun, 15 May 2005 03:03:43 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

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].
--
To reply via email subtract one hundred and four


  • Prev by Date: Re: How to call a remote Kernal?
  • Next by Date: Re: Intersection of coordinate axes in origin (3d plot)
  • Previous by thread: Re: Hold problems with FindRoot
  • Next by thread: Intersection of coordinate axes in origin (3d plot)