RE: Integrate: A feature or a bug?
- To: mathgroup at smc.vnet.net
- Subject: [mg34329] RE: [mg34248] Integrate: A feature or a bug?
- From: "DrBob" <majort at cox-internet.com>
- Date: Wed, 15 May 2002 03:35:20 -0400 (EDT)
- Reply-to: <drbob at bigfoot.com>
- Sender: owner-wri-mathgroup at wolfram.com
It's a feature if you like it (or can LEARN to like it). Otherwise, it's a bug. Bobby Treat -----Original Message----- From: Vladimir Bondarenko [mailto:vvb at mail.strace.net] To: mathgroup at smc.vnet.net Subject: [mg34329] RE: [mg34248] Integrate: A feature or a bug? Dear Higinio Ramos, You writes: HR> Directly: HR> In[23]:= HR> Integrate[1/(4 - (x + y + z + w)), HR> {x, 1, 2}, {y, 1, 2}, {z, 1, 2}, {w, 1, 2}] HR> Out[23]= HR> \!\(1\/2\ \((\(-\(\(176\ Log[2]\)\/3\)\) + 36\ Log[3])\)\ I know the exact answer. My question was ABSOLUTELY DIFFERENT: IS THE ANSWER A BUG OR A FEATURE. IF YOU WANT YOU CAN EXPLAIN ME WHAT WAS IT AND W H Y D O Y O U T H I N K SO. Best regards, Vladimir Bondarenko ........................................................................ ............ "DrBob" <majort at cox-internet.com> writes on Sun, 12 May 2002 11:03:32 BT> Your answers are correct... you need to upgrade! I AM AFRAID, I CANNOT UPGRADE. I HAVE A L L VERSIONS OF MATHEMATICA AVAILABLE (AND, MAYBE, EVEN MORE ;-) WHY DO YOU THINK THAT THE ANSWER IS OK ? REMEMBER, I HAVE NO CORRECT ANSWER, ONLY THE DECOMPOSITION. VB> I have a fairly old version of Mathematica. BUT A L O W E R VERSION OF MATHEMATICA YIELDS THE CORRECT ANSWER. CAN WE NAME MY DEMO A REGRESSION BUG ? IF NOT, WHY ? OR, IF IT IS A FEATURE, WHY ? Best regards, Vladimir Bondarenko ........................................................................ ............