MathGroup Archive 2003

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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 ?


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