/usr/share/freemat/toolbox/trig/acot.m is in freemat-data 4.0-5.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 | % ACOT ACOT Inverse Cotangent Function
%
% Usage
%
% Computes the inverse cotangent of its argument. The general
% syntax for its use is
%
% y = acot(x)
%
% where x is an n-dimensional array of numerical type.
function y = acot(x)
y = atan(1.0 ./ x);
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