Factorial2 (Built-in Mathematica Symbol)

n!! gives the double factorial of n.

InverseFourierSequenceTransform (Built-in Mathematica Symbol)

InverseFourierSequenceTransform[expr, \[Omega], n] gives the inverse discrete-time Fourier transform of expr.InverseFourierSequenceTransform[expr, {\[Omega]_1, \[Omega]_2, \ ...

LatticeReduce (Built-in Mathematica Symbol)

LatticeReduce[{v_1, v_2, ...}] gives a reduced basis for the set of vectors v_i.

LinearRecurrence (Built-in Mathematica Symbol)

LinearRecurrence[ker, init, n] gives the sequence of length n obtained by iterating the linear recurrence with kernel ker starting with initial values ...

MapAt (Built-in Mathematica Symbol)

MapAt[f, expr, n] applies f to the element at position n in expr. If n is negative, the position is counted from the end. MapAt[f, expr, {i, j, ...}] applies f to the part of ...

ModularLambda (Built-in Mathematica Symbol)

ModularLambda[\[Tau]] gives the modular lambda elliptic function \[Lambda](\[Tau]).

MorphologicalTransform (Built-in Mathematica Symbol)

MorphologicalTransform[image, f] applies the function f to the 3*3 neighborhood of each pixel in a binary image image.MorphologicalTransform[image, rule] applies a ...

TransferFunctionPoles (Built-in Mathematica Symbol)

TransferFunctionPoles[tf] gives a matrix of roots of the denominators in the TransferFunctionModel object tf.

Blocks and Local Values (Mathematica Tutorial)

Modules in Mathematica allow you to treat the names of variables as local. Sometimes, however, you want the names to be global, but values to be local. You can do this in ...

Is the Problem Well-Posed? (Mathematica Tutorial)

DSolve returns a general solution for a problem if no initial or boundary conditions are specified. The general solution to this equation is returned. However, if initial or ...