Re: FindRoot
- To: mathgroup at smc.vnet.net
- Subject: [mg31496] Re: [mg31463] FindRoot
- From: Anton Antonov <antonov at wolfram.com>
- Date: Thu, 8 Nov 2001 04:54:40 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Try
FindRoot[f[1] // Evaluate, {x, 0}]
Best,
Anton
==============================================================
Anton Antonov Antonov, PhD ***** Wolfram Research Inc.
http://www.imm.dtu.dk/~uniaaa *** tel +1 217 398 0700 #782
==============================================================
Give me wings and I will crawl faster!
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On Wed, 7 Nov 2001 Pieter-Jan.DeSmet at fys.kuleuven.ac.be wrote:
> Dear Sir,
>
> Can you clarify the following error message?
>
> In[3]:= f[i_] := x == i
>
> In[5]:= FindRoot[f[1], {x, 0}]
>
> FindRoot::frnum: Function {False} is not a length 1 list of
> numbers at {x} = {0.}.
>
> Out[5]=FindRoot[f[1], {x, 0}]
>
>
> This is a simplified version of an error message I got in a more
> difficult case. I hope that I have not made a stupid mistake.
>
> Thank you very much
>
> Pieter-Jan De Smet
>
>
>
>