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

Slow simplify[], integrate[] in 5.2 for Mac

  • To: mathgroup at smc.vnet.net
  • Subject: [mg61731] Slow simplify[], integrate[] in 5.2 for Mac
  • From: Eran Mukamel <emukamel at stanford.edu>
  • Date: Thu, 27 Oct 2005 05:02:17 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Hi All,

I wonder if someone can give some insight into why some simple
calculations are dramatically slower (or don't even simplify) in
Mathematica 5.2 which run perfectly well in 4.2. I'm using a G5 Mac OSX
10.4.  In particular I find the following (artificial) integral:

Timing[Integrate[(a+c-sdfd+34e)Exp[(a+4c-d+34e) x^2+(b-54c+4h) x+c],{
        x,-Infinity,Infinity},Assumptions\[Rule](a+4c-d+34e)<0]]

runs in 0.16 sec using 4.2, but >5 sec using 5.2.

Thanks in advance!

Eran Mukamel

Stanford Physics
emukamel at stanford.edu


  • Prev by Date: Re: Baffling change to partial derivative in version 5.1
  • Next by Date: Re: Zero argument functions
  • Previous by thread: Re: ParametricPlot3D
  • Next by thread: Re: Slow simplify[], integrate[] in 5.2 for Mac