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From: "Steven Lord" <slord@mathworks.com>
Newsgroups: comp.soft-sys.matlab
Subject: Re: Numerical Integration
Date: Thu, 13 Aug 2009 09:49:07 -0400
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"Soumendra Datta" <soumendra_13@yahoo.co.in> wrote in message 
news:h60d4l$g1g$1@fred.mathworks.com...
> "Saed " <dawoudsaed@yahoo.com> wrote in message 
> <h1g6j2$hch$1@fred.mathworks.com>...
>> "Steven Lord" <slord@mathworks.com> wrote in message 
>> <h1g5p7$nhp$1@fred.mathworks.com>...

*snip*

> Can you please specify how to define Tricomi's Confluent Hypergeometric 
> function as it is not available in MATLAB?
> Soumendra

As you may or may not know, you can extend the capabilities of MATLAB by 
writing your own function M-files.

http://www.mathworks.com/access/helpdesk/help/techdoc/learn_matlab/f4-2525.html

http://www.mathworks.com/access/helpdesk/help/techdoc/matlab_prog/f7-38012.html

Therefore, to add this functionality to MATLAB, you can find an equation for 
this function (Abramowitz & Stegun's Handbook of Mathematical Functions may 
list it) and implement that equation in a function M-file.  Then you will be 
able to use it like any other MATLAB function.

-- 
Steve Lord
slord@mathworks.com