RE: Wrong partial derivatives calculated
- To: mathgroup at smc.vnet.net
- Subject: [mg41147] RE: [mg41131] Wrong partial derivatives calculated
- From: "Yahoo" <stefanofricano at yahoo.it>
- Date: Tue, 6 May 2003 05:54:17 -0400 (EDT)
- In-reply-to: <200305050640.CAA27865@smc.vnet.net>
- Reply-to: <fricano at dsfa.fisica.unipa.it>
- Sender: owner-wri-mathgroup at wolfram.com
Dear David, Probably the mistake is in " xy ", are you sure that it is correct? Try " x*y "! Ok? *********************************************** Stefano Fricano Dip. di Scienze Fisiche ed Astronomiche Università degli Studi Via Archirafi, 36 Palermo 90123 Tel. +39 091 6234207 Fax +39 091 6168461 ********************************************* ->-----Original Message----- ->From: David [mailto:david at hushmail.com] To: mathgroup at smc.vnet.net ->Sent: Monday, May 05, 2003 8:40 AM ->To: mathgroup at smc.vnet.net ->Subject: [mg41147] [mg41131] Wrong partial derivatives calculated -> -> ->When I calculate (D[x^2 + xy + y^2, x) mathematica gives me 2y and when I ->calculate D[x^2 + xy + y^2, y) I get 2x. These are wrong answers ->-- have I ->got the syntax right? I'm trying to find partial derivatives of ->x^2 + xy + ->y^2 with respect to x and y. -> ->Thanks, -> ->David -> ->
- References:
- Wrong partial derivatives calculated
- From: "David" <david@hushmail.com>
- Wrong partial derivatives calculated