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