File: coth.sci

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scilab 2.4-1
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function t=coth(x)
//Syntax : t=coth(x)
//
// hyperbolic co-tangent of x
//!
// Copyright INRIA
if type(x)<>1 then error(53),end
t=exp(x);
t=(t-ones(x)./t).\(t+ones(x)./t)