Re: Summations
- To: mathgroup at smc.vnet.net
- Subject: [mg78273] Re: [mg78228] Summations
- From: Curtis Osterhoudt <cfo at lanl.gov>
- Date: Wed, 27 Jun 2007 05:30:45 -0400 (EDT)
- Organization: LANL
- References: <200706260833.EAA05727@smc.vnet.net>
- Reply-to: cfo at lanl.gov
On Tuesday 26 June 2007 02:33:48 Sima wrote: > 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 This looks suspiciously like a homework problem. Notice especially that once the first summation is done, the second one follows immediately and almost trivially from it. Googling the term "geometric series" might help immensely. -- ========================================================== Curtis Osterhoudt cfo at remove_this.lanl.and_this.gov PGP Key ID: 0x4DCA2A10 Please avoid sending me Word or PowerPoint attachments See http://www.gnu.org/philosophy/no-word-attachments.html ==========================================================
- References:
- Summations
- From: Sima <hrvsimic@yahoo.com>
- Summations