File r37/lisp/csl/html/r37_0515.html artifact da48c319b5 part of check-in 09c3848028

<A NAME=erfc>

<TITLE>erfc</TITLE></A>
<b><a href=r37_idx.html>INDEX</a></b><p><p>



<B>ERFC</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>operator</B><P>
<P>
 
 <P>
<P>
The <em>erfc</em> operator returns the complementary Error function 
<P>
<P>
1 - defint(e**(-x**2),x,0,infinity) * 2/sqrt(pi) 
<P>
<P>
. 
<P>
<P>
 <P> <H3> 
syntax: </H3>
<em>erfc</em>(&lt;expression&gt;) 
<P>
<P>
<P>
 <P> <H3> 
examples: </H3>
<P><PRE><TT>
erfc(xx); 

  - erf(xx) + 1

</TT></PRE><P>The operator <em>erfc</em> is simplified towards the 
<A HREF=r37_0255.html>erf</A> operator. 
<P>
<P>
<P>