Unique Command

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