home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
OS/2 Shareware BBS: 10 Tools
/
10-Tools.zip
/
octa21eb.zip
/
octave
/
SCRIPTS.ZIP
/
scripts
/
specfun
/
betai.m
< prev
next >
Wrap
Text File
|
1998-11-10
|
1KB
|
40 lines
## Copyright (C) 1998 John W. Eaton
##
## This file is part of Octave.
##
## Octave is free software; you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2, or (at your option)
## any later version.
##
## Octave is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Octave; see the file COPYING. If not, write to the Free
## Software Foundation, 59 Temple Place - Suite 330, Boston, MA
## 02111-1307, USA.
## usage: beta (a, b, x)
##
## Compute the incomplete beta function
##
## betai (a, b, x) = beta(a,b)^(-1) \int_0^x t^(a-1) (1-t)^(b-1) dt
##
## The sizes of x, a, and b must agree.
## Author: jwe
## Created: 30 Jan 1998
function retval = betai (a, b, x)
if (nargin == 3)
retval = betainc (x, a, b);
else
usage ("betai (a, b, x)");
endif
endfunction