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MathGroup Archive 2006

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List of user-defined derivatives

  • To: mathgroup at
  • Subject: [mg71565] List of user-defined derivatives
  • From: "Andrew Moylan" <andrew.j.moylan at>
  • Date: Thu, 23 Nov 2006 05:41:36 -0500 (EST)

Hi all,

When the derivative of a function is specified like this:
  f' = 6 &;
or alternatively like this:
  f'[x_] = 6;
the definitions are not stored in UpValues[f] or DownValues[f]. I
understand this is why Clear[f] doesn't clear definitions for
derivatives. My question is: where are these definitions stored, and
how can one obtain a list of user-defined derivatives such as this one?


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