Documentation/How Tos/Calc: FACT function

FACT

Returns the factorial of a number.

Syntax:

FACT(number)

Returns number!, the factorial of number, calculated as 1*2*3*4* ... * number.

FACT(0) returns 1 by definition.

Example:

FACT(3)

returns 6.

FACT(0)

returns 1.

See also:

FACTDOUBLE, MULTINOMIAL, PRODUCT

Mathematical functions