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MathGroup Archive 2007

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Summations

  • To: mathgroup at smc.vnet.net
  • Subject: [mg78228] Summations
  • From: Sima <hrvsimic at yahoo.com>
  • Date: Tue, 26 Jun 2007 04:33:48 -0400 (EDT)

Can someone please solve this summations:

Summation(from i=1 to n) (i * a ^ i)

Summation(from i=1 to m) (i * n ^ i + n ^ 3)

you can mail me sollutions. Thanks



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