| To: | s-news@wubios.wustl.edu |
|---|---|
| Subject: | numerical Derivative |
| From: | yiwu ye <yiwu21111958@yahoo.com> |
| Date: | Tue, 13 Sep 2005 19:13:04 -0700 (PDT) |
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Dear list,
I have a pair of data x and y, which have a curve
relationship. How can I caculate the derivative of y
against x at a certain point of x without knowing the
function using S+? Any help is highly appreciated.
Yiwu
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