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<A NAME=CSCH>

<TITLE>CSCH</TITLE></A>
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<B>CSCH</B> _ _ _  _ _ _  _ _ _  _ _ _ <B>operator</B><P>
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The <em>cosh</em> operator returns the hyperbolic cosecant of its argument. 
The derivative of <em>csch</em> and some simple transformations are known 
to the system. 
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syntax: </H3>
<em>csch</em>(&lt;expression&gt;) or <em>csch</em> &lt;simple\_expression&gt; 
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&lt;expression&gt; may be any scalar REDUCE expression, not an array, matrix or 

vector expression. &lt;simple\_expression&gt; must be a single identifier or 
begin with a prefix operator name. 
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examples: </H3>
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csch b; 

  CSCH(B) 



csch(0); 

  0 



df(csch(x*y),x); 

  - COTH(X*Y)*CSCH(X*Y)*Y 



int(csch(x),x); 

  INT(CSCH(X),X)

</TT></PRE><P>A numeric value is not returned by <em>csch</em> unless the switch
 

<A HREF=r37_0330.html>rounded</A> is on and its argument evaluates to a number. 

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