FinFit question

*To*: mathgroup at smc.vnet.net*Subject*: [mg54816] FinFit question*From*: Zsolt Regály <zs.regaly at icsip.elte.hu>*Date*: Wed, 2 Mar 2005 22:29:06 -0500 (EST)*Sender*: owner-wri-mathgroup at wolfram.com

Hi I have used Mathematica 4.2 to solve this problem points = {{23400, 273.2}, {6800, 298.2}, {2400, 323.2}}; T[R_] = NonlinearFit[points, B/Log[R/Ro], {R}, {B, Ro}]; wihich gives the result as 4021.05/Log[105.49 R] That is a good result, but when I try to do the same in Mathematica 5.0 I get error messaeges and an other solutions, which is surely bad 1556.90/Log[-0.014 R] Why doesn't work FindFit for this function in Mathematica 5.0 Regards, Zsolt Regaly (zs.regaly at astro.elte.hu)

**Follow-Ups**:**Re: FinFit question***From:*DrBob <drbob@bigfoot.com>