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! -------------------------------------------------------------- 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 > > > >