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Evaluating a sum from terms generated by the Array function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg109504] Evaluating a sum from terms generated by the Array function
  • From: davef <davidfrick2003 at yahoo.com>
  • Date: Sun, 2 May 2010 05:35:23 -0400 (EDT)

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?


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