Re: Why won't Horner[] work?
- To: mathgroup at smc.vnet.net
- Subject: [mg59038] Re: [mg58978] Why won't Horner[] work?
- From: "Jose Luis Gomez" <jose.luis.gomez at itesm.mx>
- Date: Wed, 27 Jul 2005 01:25:23 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Paul, it seems to me that you forgot to upload the Algebra`Horner package before using the Horner command. If that is the case, then quit Mathematica (or just quit the Kernel), start again and execute the commands in the proper order: first load the package and then load the command: <<Algebra`Horner`; Horner[Fit[ {{1, 200}, {200, 0}, {400, 200}}, {1, x, x^2}, x], x] -----Mensaje original----- De: Paul McHale [mailto:paul.mchale at _NO_$PAMearthlink.net] Enviado el: Martes, 26 de Julio de 2005 03:02 a.m. Para: mathgroup at smc.vnet.net Asunto: [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