Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2002
*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 2002

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

Search the Archive

vector integration

  • To: mathgroup at smc.vnet.net
  • Subject: [mg35052] vector integration
  • From: "Michael Bechmann" <bechmann at physik.uni-wuerzburg.de>
  • Date: Thu, 20 Jun 2002 23:54:56 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

hello everybody,
i am facing a problem in the numerical integration of a vector-valued
function using Mathematica.
as the result of some operation on the variable x  defined by  f[x_]=...
i get a list of numbers {f1,f2,f3,...,fn} each of which depends on the
variable x.
the bad point is that the fi can not be evaluated one by one. for some
chosen value of x i can only calculate the whole list of the fis.
now i need to integrate each of the fis over x. of course i could
intgrate each list element separately using NIntegrate:

Fi=NIntegrate[f[x][[i]],{x,x1,x2}]

but since the evaluation of the list f[x] is very time consuming i would
like to somehow integrate the whole list at once which is not possible
with NIntegrate.

did anybody encounter this problem, too? does anybody know a useful
package  or any solution?

thanks.


-- 
Posted via Mailgate.ORG Server - http://www.Mailgate.ORG


  • Prev by Date: Re: Varying color in ParametricPlot
  • Next by Date: Re: About Front End
  • Previous by thread: Notebook editor and KDE on Linux
  • Next by thread: Re: vector integration