Path: ccsf.homeunix.org!ccsf.homeunix.org!news1.wakwak.com!nf1.xephion.ne.jp!onion.ish.org!gcd.org!news.yamada.gr.jp!newsfeed.media.kyoto-u.ac.jp!newsfeed.icl.net!newsfeed.fjserv.net!newshosting.com!nx01.iad01.newshosting.com!news.glorb.com!postnews.google.com!z14g2000cwz.googlegroups.com!not-for-mail From: "Vladimir Bondarenko" Newsgroups: sci.math.symbolic,comp.soft-sys.math.maple,sci.math,fj.sci.math Subject: Re: An exact 1-D integration challenge - 3 Date: 9 Feb 2005 00:35:00 -0800 Organization: http://groups.google.com Lines: 16 Message-ID: <1107938100.475223.240000@z14g2000cwz.googlegroups.com> References: <1107555276.418478.215730@f14g2000cwb.googlegroups.com> <1107559162.508814.123220@f14g2000cwb.googlegroups.com> <4204FDEC.1910DA1@axelvogt.de> NNTP-Posting-Host: 217.117.72.190 Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" X-Trace: posting.google.com 1107938104 11487 127.0.0.1 (9 Feb 2005 08:35:04 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Wed, 9 Feb 2005 08:35:04 +0000 (UTC) User-Agent: G2/0.2 Complaints-To: groups-abuse@google.com Injection-Info: z14g2000cwz.googlegroups.com; posting-host=217.117.72.190; posting-account=DooOggwAAADdcqtzKMrYoQ_DNGq8lCTf Xref: ccsf.homeunix.org fj.sci.math:1620 Axel Vogt wrote on Sat, 05 Feb 2005 18:10:04 +0100 AV> # rewrite the question: AV> '2/sqrt(Pi)*Int(erf(z)/D(erf)(z)*exp(-z^4), z)'; AV> expand(%): combine(%,exp); Wow! :) Your chiselled solution adorned with comments made me feel again the powers and appeal of math. It looks like a Sleeping Beauty! I suggest that you should visit your superior and ask for a raise ;)