New function FourierDCT has been added to the built-in Mathematica kernel.
New function FourierDST has been added to the built-in Mathematica kernel.
Evaluate the discrete Fourier cosine transform of Type I using FourierDCT[data,1]:
Version 5.2
![<< LinearAlgebra`FourierTrig`;
data = Table[1 - 2 Abs[x - .5], {x, .1, .9, .1}];
FourierCos[data]](Files/FourierTrig.en/legacy_1.gif)
Evaluate the discrete Fourier sine transform of Type I using FourierDST[data,1]:
Version 5.2
![FourierSin[data]](Files/FourierTrig.en/legacy_2.gif)