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<TITLE>HANKEL1</TITLE></A>
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<B>HANKEL1</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>operator</B><P>
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The <em>Hankel1</em> operator returns the Hankel function of the first kind. 
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syntax: </H3>
<em>Hankel1</em>(&lt;order&gt;,&lt;argument&gt;) 
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examples: </H3>
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on complex; 

Hankel1 (1/2,pi); 

  - i * sqrt(2) / pi 


Hankel1 (1,pi); 

  besselj(1,pi) + i*bessely(1,pi)

</TT></PRE><P>The operator <em>Hankel1</em> is also called Bessel function of th
e third kind. 
There is currently no numeric evaluation of Hankel functions. 
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