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

%   Copyright (c) 1984-98 by The MathWorks, Inc.
%   $Revision: 5.3 $  $Date: 1997/11/21 23:28:15 $

y = 1./tanh(z);
