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Re: Derivation of Sums of Functions

  • To: mathgroup at
  • Subject: [mg64830] Re: Derivation of Sums of Functions
  • From: Jean-Marc Gulliet <jeanmarc.gulliet at>
  • Date: Sun, 5 Mar 2006 03:18:48 -0500 (EST)
  • Organization: The Open University, Milton Keynes, UK
  • References: <du6nue$5pg$> <du841h$t25$> <dubh7e$fp3$>
  • Sender: owner-wri-mathgroup at

Jochen Haller wrote:
> No, I am looking for an easy construct to solve a problem like this:
> Derivate the sum from t=0 to T over the expression:
> x_t * (k_t - k_(t-1))
> with respect to k_t, where the subscript means the index.
> JH
Hi Jochen,

The following threads may be of interest:

Best regards,

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