Unique Command

Unique[ <List> ]

Returns list of elements of the given list in ascending order, repetitive elements are included only once. Works for both a list of numbers and a list of text.

Examples:

• Unique[{1, 2, 4, 1, 4}] yields {1, 2, 4}.
• Unique[{"a", "b", "Hello", "Hello"}] yields {"'Hello", "a", "b"}.

Note: See also Frequency command.

CAS Syntax

Unique[ <List> ]

Returns a list where each element of the given list occurs only once.

Example:

Unique[{1, x, x, 1, a}] yields {1, x, a}.