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

Dividers is an option for Grid and related constructs that specifies where and how to draw divider lines.

ImageSize is an option that specifies the overall size of an image to display for an object.

Indeterminate is a symbol that represents a numerical quantity whose magnitude cannot be determined.

Mod[m, n] gives the remainder on division of m by n. Mod[m, n, d] uses an offset d.

PowerExpand[expr] expands all powers of products and powers. PowerExpand[expr, {x_1, x_2, ...}] expands only with respect to the variables x_i.

Rectangle[{x_min, y_min}, {x_max, y_max}] is a two-dimensional graphics primitive that represents a filled rectangle, oriented parallel to the axes. Rectangle[{x_min, y_min}] ...

RootReduce[expr] attempts to reduce expr to a single Root object.

ToRadicals[expr] attempts to express all Root objects in expr in terms of radicals.

UnitStep[x] represents the unit step function, equal to 0 for x < 0 and 1 for x >= 0. UnitStep[x_1, x_2, ...] represents the multidimensional unit step function which is 1 ...