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<html><head> <meta HTTP-EQUIV="Content-Type" CONTENT="text/html;charset=ISO-8859-1"> <title>erfc2.m</title><link rel="stylesheet" type="text/css" href="../../m-syntax.css"></head><body><code><span class=defun_kw>function</span> <span class=defun_out>y</span>=<span class=defun_name>erfc2</span>(<span class=defun_in>x,m,v</span>)<br><span class=h1>% ERFC2 Normal cumulative distribution function.</span><br><span class=help>%</span><br><span class=help>% <span class=help_field>Synopsis:</span></span><br><span class=help>% y=erfc2(x,m,v)</span><br><span class=help>% </span><br><span class=help>% <span class=help_field>Description:</span></span><br><span class=help>% It computes normal cumulative distribution function </span><br><span class=help>%</span><br><span class=help>% erfc2(x) = 1/sqrt(2*pi)*v) * </span><br><span class=help>% integral from x to inf of exp(-(t-m)^2/(2*v^2) dt</span><br><span class=help>%</span><br><span class=help>% <span class=help_field>Input:</span></span><br><span class=help>% x [1x1] Real number.</span><br><span class=help>% m [1x1] Mean value.</span><br><span class=help>% v [1x1] Variance.</span><br><span class=help>%</span><br><span class=help>% <span class=help_field>Output:</span></span><br><span class=help>% y [1x1] Error function.</span><br><span class=help>%</span><br><span class=help>% See also </span><br><span class=help>% ERFC.</span><br><span class=help>%</span><br><hr><span class=help1>% <span class=help1_field>About:</span> Statistical Pattern Recognition Toolbox</span><br><span class=help1>% (C) 1999-2003, Written by Vojtech Franc and Vaclav Hlavac</span><br><span class=help1>% <a href="http://www.cvut.cz">Czech Technical University Prague</a></span><br><span class=help1>% <a href="http://www.feld.cvut.cz">Faculty of Electrical Engineering</a></span><br><span class=help1>% <a href="http://cmp.felk.cvut.cz">Center for Machine Perception</a></span><br><br><span class=help1>% <span class=help1_field>Modifications:</span></span><br><span class=help1>% 28-apr-2004, VF</span><br><br><hr>x2=(x-m)/(sqrt(2)*v);<br>y=erfc(x2)/2;<br><br><span class=jump>return</span>;<br></code>?? 快捷鍵說明
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