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, 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.
As of Version 7.0, FourierSinCoefficient is part of the built-in Mathematica kernel.
General::dupv
NIntegrate::mdgen
As of Version 6.0, NIntegrate natively supports InterpolatingFunction objects.
As of Version 8.0, ExpectedValue has been superseded by Expectation and NExpectation.
As of Version 8, HotellingTSquareDistribution is part of the built-in Mathematica kernel.