Re: FindRoot
- To: mathgroup at smc.vnet.net
- Subject: [mg31519] Re: [mg31463] FindRoot
- From: BobHanlon at aol.com
- Date: Thu, 8 Nov 2001 04:56:40 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
In a message dated 2001/11/7 6:57:38 AM, Pieter-Jan.DeSmet at fys.kuleuven.ac.be
writes:
>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.
f[i_]:=x==i;
FindRoot[Evaluate[f[1],{x,0}]]
{x -> 1.}
Bob Hanlon
Chantilly, VA USA