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
>

```

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