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MathGroup Archive 2005

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Re: Why won't Horner[] work?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg59027] Re: Why won't Horner[] work?
  • From: dh <dh at metrohm.ch>
  • Date: Wed, 27 Jul 2005 01:24:49 -0400 (EDT)
  • Organization: Cablecom Newsserver
  • References: <dc4r39$i9$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi Paul,
If you want to use Horner, you must first load the following package:
<<Algebra`Horner`
afterwards everything works fine.
sincerely, Daniel

Paul McHale wrote:
> When I issue the command:
> 
> In:= Fit[ {{1,200},{200,0},{400,200}}, {1,x,x^2}, x]
> 
> Out:= 202.01 - 2.01508 x + 0.00502513 x^2

> This seems good.  But when I do
> 
> 
> In:= Horner[Fit[ {{1,200},{200,0},{400,200}}, {1,x,x^2}, x]]
> 
> Out:= Horner[202.01 - 2.01508 x + 0.00502513 x^2]
> 
> 
> Why doesn't it evaluate the polynomial?  To I need to convert the
> output of fit?
> 
> Thanks,
> Paul
> 


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