Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2007
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2007

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

Search the Archive

Re: Mathematica: FindRoot Help!!!

  • To: mathgroup at smc.vnet.net
  • Subject: [mg79713] Re: Mathematica: FindRoot Help!!!
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Thu, 2 Aug 2007 03:55:29 -0400 (EDT)
  • Organization: Uni Leipzig
  • References: <f8phsd$1hd$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de

Hi,

and we can guess what you input is, when you give us a single equation
of a "system of simultaneous equations". Since my cristall ball is
broken

With[{bgamma012 = 1, dgamma1 = 1, bgamma01 = 1},
FindRoot[
   bgamma012 + dgamma1 + bgamma01 - mgamma01 == 0, {mgamma01, 1}]
  ]

work fine, and I can't see you problem.

Regards
   Jens

MU wrote:
> Hi all,
> 
> I am quite new to mathematica and need to solve a system of simultaneous equations. I have coded it up but now get the following error message:
> 
> FindRoot::fdssnv: Search specification \
> bgamma012+dgamma1+bgamma01-mgamma01==0 without variables should be a \
> list with 1-4 elements. >>
> 
> I cant work out what the problem is as I have defined bgamma012,dgamma1,bgamma01 as variables and mgamma01 as a paramter and given the variables initial guessese and allocated a value to the paramter. 
> 
> thanks for your help in advance
> 


  • Prev by Date: Re: finding the weighted degree of a polynomial
  • Next by Date: Re: Function definition within a module (about variable renaming)
  • Previous by thread: Mathematica: FindRoot Help!!!
  • Next by thread: RegionPlot3D & MaxRecursion