function y = coth(z)
%COTH   Hyperbolic cotangent.
%   COTH(X) is the hyperbolic cotangent of the elements of X.

%   Copyright 1984-2000 The MathWorks, Inc. 
%   $Revision: 5.5 $  $Date: 2000/06/01 00:40:16 $

y = 1./tanh(z);
