derivative in numpy

Gary Herron gherron at
Tue Jul 29 00:58:37 CEST 2008

knielsen73 at wrote:
> Hi,
> I am looking to do a simple derivative. I would expect such a function
> to be available in numpy, but can't find it. I have written my own,
> but just curious if anybody knows of such function in numpy.

Derivatives are a property of functions. Since numpy provides 
representations of arrays not functions, how would you expect this to work?

To be more concrete, what you you expect the derivative of
[ [ 1 2 ]
[ 3 4 ]
to be?

Or do you have in mind some array representation of the coefficients of 
a function of some pre-defined type - like a polynomial?

Gary Herron

> Cheers,
>  Kim
> --

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