Re: Assigning a list to coefficients

*To*: mathgroup at smc.vnet.net*Subject*: [mg13916] Re: [mg13883] Assigning a list to coefficients*From*: "Jens-Peer Kuska" <kuska at linmpi.mpg.de>*Date*: Mon, 7 Sep 1998 01:22:41 -0400*Sender*: owner-wri-mathgroup at wolfram.com

Hi Toshi with rules=Thread[Table[c[i],{i,1,n}] -> A] You create your transformation rules. Later if You wish to expand the A's just say aLongResultWithCis /. rules Hope that helps Jens -----Original Message----- From: Toshiyuki Meshii <tm60 at cornell.edu> To: mathgroup at smc.vnet.net Subject: [mg13916] [mg13883] Assigning a list to coefficients >Hello, > >How can I assign a list to a coefficient with an index? That is, I have >a list A which has data A={a1, a2, a3, ....., an} >all the components of A is numerical value. And I want to assign the >coefficients ci used in f[x_]=Sum[ ci * x ,{i=1,n}] >at the later stage to the list A. How can I do it? > >I want to do some work such as differentiating f[x] symbolically, so I >do not want to use A[[i]] in the Sum. > >-Toshi > > >