Total Derivative
- To: mathgroup at smc.vnet.net
- Subject: [mg42088] Total Derivative
- From: Joel storch <jstorch at earthlink.net>
- Date: Wed, 18 Jun 2003 02:11:24 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Dt[x y,x,y] gives 1+dx/dy dy/dx I would expect: 1+dx/dy dy/dx + x d/dy (dy/dx) Can someone explain this result ?