Note that Chebyshev polynomials have an intimate relationship to trigonometric functions: cos(n x) can be expressed as a polynomial of cos(x), namely T_n(cos(x)). In other words, T_n(x) = cos(n acos(x)).
Note that Chebyshev polynomials have an intimate relationship to trigonometric functions: cos(n x) can be expressed as a polynomial of cos(x), namely T_n(cos(x)). In other words, T_n(x) = cos(n acos(x)).