Re: Why won't Horner[] work?
- To: mathgroup at smc.vnet.net
- Subject: [mg59019] Re: [mg58978] Why won't Horner[] work?
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Wed, 27 Jul 2005 01:24:40 -0400 (EDT)
- Reply-to: hanlonr at cox.net
- Sender: owner-wri-mathgroup at wolfram.com
Did you load the package first?
Needs["Algebra`Horner`"];
Horner[Fit[{{1,200},{200,0},{400,200}},{1,x,x^2},x]]
(0.00502513 x-2.01508) x+202.01
Bob Hanlon
>
> From: Paul McHale <paul.mchale at _NO_$PAMearthlink.net>
To: mathgroup at smc.vnet.net
> Date: 2005/07/26 Tue AM 04:01:43 EDT
> Subject: [mg59019] [mg58978] Why won't Horner[] work?
>
>
> 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
>
>