HistogramList[{x_1, x_2, ...}] gives a list of bins and histogram heights of the values x_i.HistogramList[{{x_1, y_1, ...}, {x_2, y_2, ...}, ...}] gives a list of bins and ...
n!! gives the double factorial of n.
The NumericalDifferentialEquationAnalysis package combines functionality for analyzing differential equations using Butcher trees, Gaussian quadrature, and Newton-Cotes ...
CoefficientArrays[polys, vars] gives the arrays of coefficients of the variables vars in the polynomials polys.
LeastSquares[m, b] finds an x that solves the linear least-squares problem for the matrix equation m.x == b.
Sequence of unsigned 64-bit integers. Raw binary format. Equivalent to the Byte format.
Depth
(Built-in Mathematica Symbol) Depth[expr] gives the maximum number of indices needed to specify any part of expr, plus 1.
O
(Built-in Mathematica Symbol) O[x]^n represents a term of order x^n. O[x]^n is generated to represent omitted higher-order terms in power series. O[x, x_0]^n represents a term of order (x - x_0) n.
Range
(Built-in Mathematica Symbol) Range[i_max] generates the list {1, 2, ..., i_max}. Range[i_min, i_max] generates the list {i_min, ..., i_max}. Range[i_min, i_max, di] uses step di.
NLimit
(Numerical Calculus Package Symbol) NLimit[expr, z -> z_0] numerically finds the limiting value of expr as z approaches z_0.