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CD Concept 6
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rlib
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acosh.r
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Text File
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1994-02-21
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322b
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15 lines
//-------------------------------------------------------------------//
// Syntax: acosh ( X )
// Description:
// Acosh is the inverse hyperbolic cosine of the element(s) of X.
//-------------------------------------------------------------------//
acosh = function ( x )
{
return log (x + sqrt (x.^2 - 1));
};