Direction (Built-in Mathematica Symbol)

Direction is an option for Limit that specifies the direction in which the limit is taken.

Directive (Built-in Mathematica Symbol)

Directive[g_1, g_2, ...] represents a single graphics directive composed of the directives g_1, g_2, ....

DirectoryQ (Built-in Mathematica Symbol)

DirectoryQ["name"] gives True if the directory with the specified name exists, and gives False otherwise.

DiscreteLQEstimatorGains (Built-in Mathematica Symbol)

DiscreteLQEstimatorGains[ss, {w, v}, \[Tau]] gives the optimal discrete-time estimator gain matrix with sampling period \[Tau] for the continuous-time StateSpaceModel object ...

DiscreteLyapunovSolve (Built-in Mathematica Symbol)

DiscreteLyapunovSolve[a, c] finds the numeric solution x of the discrete matrix equation a.x.a\[ConjugateTranspose] - x == c.DiscreteLyapunovSolve[a, b, c] solves a.x.b - x ...

DivideBy (Built-in Mathematica Symbol)

x /= c divides x by c and returns the new value of x.

DockedCells (Built-in Mathematica Symbol)

DockedCells is an option for notebooks that gives a list of cells that are to be displayed "docked" at the top of the notebook.

DotDashed (Built-in Mathematica Symbol)

DotDashed is a graphics directive specifying that lines that follow should be drawn dot-dashed.

Dotted (Built-in Mathematica Symbol)

Dotted is a graphics directive specifying that lines that follow should be drawn dotted.

DynamicEvaluationTimeout (Built-in Mathematica Symbol)

DynamicEvaluationTimeout is an option for displayed objects, cells, and notebooks that specifies the timeout in seconds for any Dynamic computations they contain.