Assigning a list to coefficients

*To*: mathgroup at smc.vnet.net*Subject*: [mg13883] Assigning a list to coefficients*From*: "Toshiyuki Meshii" <tm60 at cornell.edu>*Date*: Sun, 6 Sep 1998 02:55:23 -0400*Sender*: owner-wri-mathgroup at wolfram.com

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