Re: Evaluating a sum from terms generated by the Array function

*To*: mathgroup at smc.vnet.net*Subject*: [mg109513] Re: Evaluating a sum from terms generated by the Array function*From*: "M.Roellig" <markus.roellig at googlemail.com>*Date*: Mon, 3 May 2010 06:10:25 -0400 (EDT)*References*: <hrjh0l$bg8$1@smc.vnet.net>

On 2 Mai, 11:35, davef <davidfrick2... at yahoo.com> wrote: > I want to evaluate a sum from a series I created using the Array > function. > > For example; I specify > > Array[((-1)^(# + 1) (x)^#)/# ! &, 3, 1 ] > > which gives me the following 3 terms of output: > > {x, -(x^2/2), x^3/6} > > Can anyone tell if and how I can turn these 3 terms into a sum to be > evaluated? maybe Total ? Total@Array[((-1)^(# + 1) (x)^#)/#! &, 3, 1] x - x^2/2 + x^3/6 Markus