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Re: newbie question: generic derivatives

  • To: mathgroup at smc.vnet.net
  • Subject: [mg41580] Re: [mg41563] newbie question: generic derivatives
  • From: Andrzej Kozlowski <akoz at mimuw.edu.pl>
  • Date: Tue, 27 May 2003 05:25:29 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

I guess

Dt[f[y[x], y'[x]], x] // TraditionalForm

is what you want.

Andrzej Kozlowski
Yokohama, Japan
http://www.mimuw.edu.pl/~akoz/
http://platon.c.u-tokyo.ac.jp/andrzej/

On Tuesday, May 27, 2003, at 02:47  pm, Eduardo Suárez wrote:

> Hello all.
>
> I'm new to mathematica and i'm trying to do some partial derivatives.
>
> I have y(x) and f(y,y') and would like to get:
>
> df/dx=...
>
> Is there a way to get a result without defining 'f' and 'y'. I mean
> df/dx = pf/py y' + pf/py' y''.
>
> Thanks in advance,
> -Eduardo
>
>
>


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