Disk[{x, y}, r] is a two-dimensional graphics primitive that represents a filled disk of radius r centered at the point x, y. Disk[{x, y}] gives a disk of radius 1. Disk[{x, ...

Dispatch[{lhs_1 -> rhs_1, lhs_2 -> rhs_2, ...}] generates an optimized dispatch table representation of a list of rules. The object produced by Dispatch can be used to give ...

DisplayForm[expr] prints with low-level boxes inside expr shown in explicit two-dimensional or other form.

D[f, x] gives the partial derivative \[PartialD]f/\[PartialD]x. D[f, {x, n}] gives the multiple derivative \[PartialD]^n f/\[PartialD]x^n. D[f, x, y, ...] differentiates f ...

Enabled is an option for objects such as Slider that specifies whether the objects should be enabled for interactive manipulation.

EvenQ[expr] gives True if expr is an even integer, and False otherwise.

Except[c] is a pattern object which represents any expression except one that matches c. Except[c, p] represents any expression that matches p but not c.

ExpToTrig[expr] converts exponentials in expr to trigonometric functions.

FontSize is an option for Style and Cell that specifies the default size in printer's points of the font in which to render text.

FourierDCT[list] finds the Fourier discrete cosine transform of a list of real numbers.FourierDCT[list, m] finds the Fourier discrete cosine transform of type m.