Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2009

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: General form of a summation as a function of 2

  • To: mathgroup at smc.vnet.net
  • Subject: [mg97412] Re: [mg97376] General form of a summation as a function of 2
  • From: DrMajorBob <btreat1 at austin.rr.com>
  • Date: Thu, 12 Mar 2009 05:43:58 -0500 (EST)
  • References: <200903120717.CAA23479@smc.vnet.net>
  • Reply-to: drmajorbob at bigfoot.com

No clue what your notation means:

sum_{k=0}^n (k/n)

but MAYBE you mean

Sum[k/n, {k, 0, n}]

(1 + n)/2

Bobby

On Thu, 12 Mar 2009 02:17:34 -0500, David Diez <david at stat.ucla.edu> wrote:

> My goal is to have a general form of a summation that is a function of  
> two variables, and would like to see if Mathematica can be used to  
> determine the general form.
>
> For example, with a single variable, is there a way to get Mathematica  
> to take
>
> sum_{k=0}^n (k/n)
>
> and determine the general formula for the sum (as a function of 'n') is  
> (n+1)/2?
>
> The problem I am looking at is a bit more complicated (incorporates a  
> five factorials) and is a function of two variables, m and n. I have  
> never programmed in Mathematica (but do have programming experience in a  
> few languages), and any direction on what resources or functions are  
> appropriate for this sort of problem would be greatly appreciated. If  
> this sort of thing can only be done in one variable, that would also be  
> very useful since I'll just look at a particular case (when the two  
> variables are equal: m=n).
>
> Thanks much for any help,
> David
>



-- 
DrMajorBob at bigfoot.com


  • Prev by Date: Re: Flipping axes on Graphics
  • Next by Date: Re: Using Select
  • Previous by thread: General form of a summation as a function of 2 variables
  • Next by thread: Re: General form of a summation as a function of 2 variables