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Re: Help on Collecting Integers

• To: mathgroup at smc.vnet.net
• Subject: [mg91804] Re: Help on Collecting Integers
• From: dh <dh at metrohm.ch>
• Date: Mon, 8 Sep 2008 05:04:00 -0400 (EDT)
• References: <g9qi9p$49e$1@smc.vnet.net>

Hi Sergio,

you simply need to use "Expand":

Expand[ b[4] ]

hope this helps, Daniel



sergio_r at mail.com wrote:

> Hello Mathematica users,

> 

> (*****

> After an iterative process, I am obtaining the following expression

> 

>                                   a0 + b0

>                                   ------- + c0

>          a0 + b0        a0 + b0      2

>          ------- + c0   ------- + ------------

>             2              2           2

>          ------------ + ----------------------

>               2                   2

> Out[69]= -------------------------------------

>                            2

> or in its InputForm:

> *********)

> 

>     b[4]=(((a0 + b0)/2 + c0)/2 + ((a0 + b0)/2 + ((a0 + b0)/2 + c0)/2)/

> 2)/2

> 

> (****

> In order to analyze the fractional sequence of the symbols a0, b0, and

> c0 (for instance to see if the iterative process leads to a convergent

> sum), I am wondering if I could use Mathematica to

> Collect the terms corresponding to a0, b0, and c0 in the

> form (I did this by hand from the previous expression):

> 

>       1   1   1            1   1   1            1   1

> a0 (- + - + --) + b0 (- + - + --) + c0 (- + -)

>       8   8   16           8   8   16         4   8

> 

> ****)

> 

> Thanks in advance,

> 

> Sergio

> sergio_r at mail.com@mail.com

> 





-- 



Daniel Huber

Metrohm Ltd.

Oberdorfstr. 68

CH-9100 Herisau

Tel. +41 71 353 8585, Fax +41 71 353 8907

E-Mail:<mailto:dh at metrohm.com>

Internet:<http://www.metrohm.com>