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Acsch(x)

Last updated October 9, 2001
Download UDF

author

Rob Brooks-Bilson                                 Rob Brooks-Bilson

Version: 1 | Requires: ColdFusion 5 | Library: MathLib

Description:
Returns the inverse hyperbolic cosecant of an angle. If angle is 0, returns "undefined". All angles are expressed in radians.

Return Values:
Returns a numeric value or string.

Example:

<CFSET x=(Pi()/2)>
<CFOUTPUT>
Given x=#x#<BR>
The Acsch of #x# radians is: #Acsch(x)#
</CFOUTPUT>

Parameters:

Name Description Required
x Any angle expressed in radians. Yes

Full UDF Source:

<cfscript>
/**
* Returns the inverse hyperbolic cosecant of an angle.
*
* @param x      Any angle expressed in radians.
* @return Returns a numeric value or string.
* @author Rob Brooks-Bilson (rbils@amkor.com)
* @version 1.0, October 9, 2001
*/

function Acsch(x){
if (x EQ 0)
return "undefined";
else
return Log((Sgn(x)*Sqr(x*x+1)+1)/x);
}
</cfscript>

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