Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2005
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2005

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

Search the Archive

Re: Re: Re: DSolve and matrix form of system of equations

  • To: mathgroup at smc.vnet.net
  • Subject: [mg61519] Re: [mg61512] Re: [mg61469] Re: DSolve and matrix form of system of equations
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Fri, 21 Oct 2005 00:38:03 -0400 (EDT)
  • Organization: Mathematics & Statistics, Univ. of Mass./Amherst
  • References: <200510140956.FAA28648@smc.vnet.net> <disld4$mf3$1@smc.vnet.net> <200510200307.XAA12761@smc.vnet.net> <200510200901.FAA21437@smc.vnet.net>
  • Reply-to: murray at math.umass.edu
  • Sender: owner-wri-mathgroup at wolfram.com

A good way to learn exactly what these mapping operations do is to look 
at the "visual definitions" for some of them at:

  http://www.mathematica.co.kr/mathcomm/20_definitionviz/index.html

I believe that a similar thing appears on the Wolfram web site, but I 
can never find it there when I search.

Chris Chiasson wrote:
> Matt, to be honest, I don't really understand the details of how
> MapThread (or the others) works. I just know that when I see
> expressions of a particular structure and I need to transform them,
> they might be amendable to certain commands...
> I then try a few of them until I get what I want. That is probably not
> the best way to go about it, but, eh... o well.
> 
> Some good ones to try out:
> MapThread, Inner, Outer, Apply, Sequence, Flatten

-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305


  • Prev by Date: Re: regress versus fit - force through zero/force constant term to zero
  • Next by Date: Re: Set construction with condition
  • Previous by thread: Re: Re: DSolve and matrix form of system of equations
  • Next by thread: Re: DSolve and matrix form of system of equations