Re: Finding derivatives of a list?
- To: mathgroup at smc.vnet.net
- Subject: [mg40819] Re: Finding derivatives of a list?
- From: Peter W <pewei at algonet.se>
- Date: Mon, 21 Apr 2003 06:51:14 -0400 (EDT)
- References: <b7qp61$3jq$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Im curious of what AES have already tried and why it did not work. I would first try (different kinds of) splines, InterpolatingPolynomial or maybe some algoritm in Numerical recipes etc, I am sure AES have also tried that so..more details, somewhere (Mathemaitca Journal?) I saw an article about finding derivatives of some data using a DFT technique, I dont know if it is applicable in this case. Best regards Peter W AES/newspost wrote: > Specific problem is how to generate a list of values of the second > derivative of a relatively smooth function at a set of equally spaced > points, when the function itself is known only as a list of numerical > values at those same points? > > -- > "Power tends to corrupt. Absolute power corrupts absolutely." > Lord Acton (1834-1902) > "Dependence on advertising tends to corrupt. Total dependence on > advertising corrupts totally." (today's equivalent)