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

**Follow-Ups**:**Re: Slow simplify[], integrate[] in 5.2 for Mac***From:*Chris Chiasson <chris.chiasson@gmail.com>