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cheb

PURPOSE ^

% Usage: cheb (n, x)

SYNOPSIS ^

function T = cheb (n, x)

DESCRIPTION ^

% Usage:  cheb (n, x)
%
% Returns the value of the nth-order Chebyshev polynomial calculated at
% the point x. The Chebyshev polynomials are defined by the equations:
%
%           / cos(n acos(x),    |x| <= 1
%   Tn(x) = |
%           \ cosh(n acosh(x),  |x| > 1
%
% If x is a vector, the output is a vector of the same size, where each
% element is calculated as y(i) = Tn(x(i)).

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:
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