FourierSeries[expr, t, n] gives the n\[Null]^th-order Fourier series expansion of expr in t. FourierSeries[expr, {t_1, t_2, ...}, {n_1, n_2, ...}] gives the multidimensional ...
FourierSinSeries[expr, t, n] gives the n\[Null]^th-order Fourier sine series expansion of expr in t.FourierSinSeries[expr, {t_1, t_2, ...}, {n_1, n_2, ...}] gives the ...
KleinInvariantJ[\[Tau]] gives the Klein invariant modular elliptic function J(\[Tau]).
Norm
(Built-in Mathematica Symbol) Norm[expr] gives the norm of a number, vector or matrix. Norm[expr, p] gives the p-norm.
WaveletPhi[wave, x] gives the scaling function \[Phi](x) for the symbolic wavelet wave evaluated at x.WaveletPhi[wave] gives the scaling function as a pure function.
WeierstrassSigma[u, {g_2, g_3}] gives the Weierstrass sigma function \[Sigma](u; g_2, g_3).
In addition to its graphical results, Wolfram|Alpha can provide alternative representations that contain additional information or are well suited to particular tasks. These ...
The functions accessible with Wolfram LibraryLink make it possible to optimize numerical computations while still keeping the flexibility and generality of Mathematica. If ...
BarCharts`
(Mathematica Compatibility Information) As of Version 7, the Bar Charts Package has been integrated into the Mathematica kernel.
The functionality of Calculus`DSolveIntegrals` is now available in the built-in Mathematica kernel function DSolve.