As of Version 7.0, FindDivisions has been added to the built-in Mathematica kernel.
As of Version 7.0, FourierCoefficient is part of the built-in Mathematica kernel.
As of Version 7.0, FourierCosCoefficient is part of the built-in Mathematica kernel.
As of Version 7.0, FourierSeries is part of the built-in Mathematica kernel.
As of Version 7.0, FourierSinCoefficient is part of the built-in Mathematica kernel.
As of Version 7.0, FourierTrigSeries is part of the built-in Mathematica kernel.
As of Version 7.0, InverseDTFourierTransform has been renamed to InverseFourierSequenceTransform and is part of the built-in Mathematica kernel.
The built-in function Fit finds a least-squares fit to a list of data as a linear combination of the specified basis functions. The functions Regress and DesignedRegress ...
As of Version 8, HotellingTSquareDistribution is part of the built-in Mathematica kernel.
As of Version 8, MultinormalDistribution is part of the built-in Mathematica kernel.