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<A NAME=Si>

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



<B>SI</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>operator</B><P>
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The <em>Si</em> operator returns the Sine Integral function. 
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 <P> <H3> 
syntax: </H3>
<em>Si</em>(&lt;expression&gt;) 
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 <P> <H3> 
examples: </H3>
<P><PRE><TT>
limit(Si(x),x,infinity); 

  pi / 2 


on rounded; 

Si(0.35); 

  0.347626790989

</TT></PRE><P>The numeric values for the operator <em>Si</em> are computed via t
he 
power series representation, which limits the argument range. 
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