Unique Command

Unique[ <List L> ]

Returns list of elements of list L in ascending order, repetitive elements are included only once. Works for both a list of numbers and a list of text. See also the Frequency command.

Example:

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

CAS Syntax

Unique[ <List L> ]

Returns a list where each element of L occurs only once.

Example:

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