Factorial

[fæk'tɔːrɪəl] or [fæk'tɔrɪəl]

解釋/意思:

(noun.) the product of all the integers up to and including a given integer; '1, 2, 6, 24, and 120 are factorials'.

(adj.) of or relating to factorials .

弗恩手打--From WordNet

解釋/意思:

(a.) Of or pertaining to a factory.

(a.) Related to factorials.

(n.) A name given to the factors of a continued product when the former are derivable from one and the same function F(x) by successively imparting a constant increment or decrement h to the independent variable. Thus the product F(x).F(x + h).F(x + 2h) . . . F[x + (n-1)h] is called a factorial term, and its several factors take the name of factorials.

(n.) The product of the consecutive numbers from unity up to any given number.

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