Re: Bug in Mathematica ?

*To*: mathgroup at smc.vnet.net*Subject*: [mg60794] Re: [mg60779] Bug in Mathematica ?*From*: Bob Hanlon <hanlonr at cox.net>*Date*: Thu, 29 Sep 2005 05:41:01 -0400 (EDT)*Reply-to*: hanlonr at cox.net*Sender*: owner-wri-mathgroup at wolfram.com

Works fine on my system $Version 5.2 for Mac OS X (June 20, 2005) Clear[x,y]; Integrate[Max[x,y],{x,0,1},{y,0,1}] 2/3 NIntegrate[Max[x,y],{x,0,1},{y,0,1}]//Rationalize 2/3 Integrate[x,{x,0,1},{y,0,x}]+Integrate[y,{x,0,1},{y,x,1}] 2/3 Bob Hanlon > > From: Bidule <toto at truc.com> To: mathgroup at smc.vnet.net > Date: 2005/09/28 Wed AM 01:41:27 EDT > Subject: [mg60794] [mg60779] Bug in Mathematica ? > > Hi, > > I've computed the following two expressions: > > Integrate[Max[x, y], {x, 0, 1}, {y, 0, 1}] > NIntegrate[Max[x, y], {x, 0, 1}, {y, 0, 1}] > > which result in very different numbers. When I calculate the integral by > hand I get (2/3). > > Any thoughts ? I guess by now it's probably a known bug. (or maybe even > a 'feature'). > > B. > >