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From: "Steven Lord" <slord@mathworks.com>
Newsgroups: comp.soft-sys.math.maple,sci.math,sci.op-research,sci.math.num-analysis,comp.soft-sys.matlab
Subject: Re: How to take 200th order derivative, and then evaluate it numerically?
Date: Wed, 18 Mar 2009 13:07:10 -0400
Organization: The MathWorks, Inc.
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<excellentfeng@gmail.com> wrote in message 
news:f6ebcf2b-4782-4984-aebc-7cdb5b28ccee@p2g2000prf.googlegroups.com...
> Hi all,
>
> We need to take the 200th order derivative of a complicated formula,
> and then evaluate it numerically.

My first question:  why?  I can see why you might want to take the 1st 
derivative, or the 2nd derivative, or maybe even the 3rd or 4th derivative 
of a function.  The 200th?  How are you planning to use the value you 
receive from this procedure?

*snip*

-- 
Steve Lord
slord@mathworks.com