Denominator (Built-in Mathematica Symbol)

Denominator[expr] gives the denominator of expr.

DialogNotebook (Built-in Mathematica Symbol)

DialogNotebook[{cell_1, cell_2, ...}] represents a dialog notebook that can be manipulated by the Mathematica front end.

DiamondMatrix (Built-in Mathematica Symbol)

DiamondMatrix[r] gives a matrix whose elements are 1 in a diamond-shaped region that extends r index positions to each side, and are 0 otherwise.DiamondMatrix[r, w] gives a ...

DiracDelta (Built-in Mathematica Symbol)

DiracDelta[x] represents the Dirac delta function \[Delta](x). DiracDelta[x_1, x_2, ...] represents the multidimensional Dirac delta function \[Delta](x_1, x_2, ...).

DirectedGraph (Built-in Mathematica Symbol)

DirectedGraph[g] gives a directed graph from the undirected graph g.DirectedGraph[g, conv] gives a directed graph using the conversion conv.

DiscreteRiccatiSolve (Built-in Mathematica Symbol)

DiscreteRiccatiSolve[{a, b}, {q, r}] gives the matrix x that is the stabilizing solution of the discrete algebraic Riccati equation ConjugateTranspose[a].x.a - x - ...

DiskMatrix (Built-in Mathematica Symbol)

DiskMatrix[r] gives a matrix whose elements are 1 in a disk-shaped region of radius r, and are otherwise 0.DiskMatrix[r, w] gives a w*w matrix containing a disk of 1s with ...

DistributionParameterQ (Built-in Mathematica Symbol)

DistributionParameterQ[dist] yields True if dist is a valid distribution, and yields False otherwise.

DocumentNotebook (Built-in Mathematica Symbol)

DocumentNotebook[{cell_1, cell_2, ...}] represents a complete document notebook in the Mathematica front end.

Dt (Built-in Mathematica Symbol)

Dt[f, x] gives the total derivative d f/d x. Dt[f] gives the total differential d f. Dt[f, {x, n}] gives the multiple derivative d^n f/d x^n. Dt[f, x_1, x_2, ...] gives d/d ...