Services & ResourcesWolfram ForumsMathGroup Archive

[Date Index] [Thread Index] [Author Index]

Wrong partial derivatives calculated

• To: mathgroup at smc.vnet.net
• Subject: [mg41131] Wrong partial derivatives calculated
• From: "David" <david at hushmail.com>
• Date: Mon, 5 May 2003 02:40:28 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

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

• Follow-Ups:
  • Re: Wrong partial derivatives calculated
    • From: "German Buitrago A." <gerbual@col2.telecom.com.co>
  • RE: Wrong partial derivatives calculated
    • From: "Yahoo" <stefanofricano@yahoo.it>