Some of the functionality in Graphics`Spline` has been added to the built-in Mathematica kernel.

All the functionality of Miscellaneous`Units`is now available in the newly created Units Package.

All the functionality of NumericalMath`InterpolateRoot`is now available in the newly created Function Approximations Package.

All the functionality of NumericalMath`NResidue` is now available in the newly created Numerical Calculus Package.

RegressionReport and related symbols have been replaced by FittedModel properties. Weights has been added to the built-in Mathematica kernel. Ellipsoid is now available in ...

SystemInformation gives detailed information about your Mathematica system. "Packages & Files" under the Kernel tab gives information about the packages currently loaded into ...

Characteristic[f] gives the characteristic of the field f.

NFourierCosTransform[expr, t, \[Omega]] gives a numerical approximation to the Fourier cosine transform of expr evaluated at the numerical value \[Omega], where expr is a ...

NFourierSinTransform[expr, t, \[Omega]] gives a numerical approximation to the Fourier sine transform of expr evaluated at the numerical value \[Omega], where expr is a ...

NFourierTransform[expr, t, \[Omega]] gives a numerical approximation to the Fourier transform of expr evaluated at the numerical value \[Omega], where expr is a function of t.