Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2003
*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 2003

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

Search the Archive

NIntegrate

  • To: mathgroup at smc.vnet.net
  • Subject: [mg44794] NIntegrate
  • From: Zheng Yang <zhengy at seas.upenn.edu>
  • Date: Thu, 27 Nov 2003 11:38:18 -0500 (EST)
  • Organization: University of Pennsylvania
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

I'd like to ask why the first expression below takes so much longer to finish than the second. They look same to me.

\!\(N[â?«\_1\%â??\((x - 1)\)^ .5\ \(1\/\(1 + Exp[\((x - 
          2)\)/2]\)\) \[DifferentialD]x]\)

\!\(NIntegrate[\((x - 1)\)^ .5\ 1\/\(1 + Exp[\((x - 2)\)/2]\), {x, 1, â??}]\)

And I'd like to know if this apply to other numerical functions.

Thanks a lot,

Zheng


  • Prev by Date: Re: here's one driving me mad!
  • Next by Date: How to NOT convert Sin[x]/Cos[x] to Tan[x] ?
  • Previous by thread: subscribe and ask questions
  • Next by thread: How to NOT convert Sin[x]/Cos[x] to Tan[x] ?