Maintenance script: Initial automated import

2016-02-24T18:08:04Z

Initial automated import

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{{Template:TI-BASIC:Command
|picture=FACTORIAL.GIF
|summary=Calculates the factorial of a number or list.
|syntax=''value''!
|location=Press:
# MATH to access the [[TI-BASIC:Math|Math]] menu.
# LEFT to access the PRB submenu.
# 4 to select !, or use arrows.
|compatibility=TI-83/84/+/SE
|size=1 byte
}}

! is the factorial function, where ''n''! = ''n''*(''n''-1)! and 0! = 1, ''n'' an nonnegative integer. The function also works for arguments that are half an odd integer and greater than -1/2: <math>(-\frac1{2})!</math> is defined as <math>\sqrt{\pi}</math> and the rest are defined recursively.

3!
6
(‾.5)!
1.772453851
Ans²
3.141592654

The combinatorial interpretation of factorials is the number of ways to arrange ''n'' objects in order.

= Error Conditions =

* '''[[TI-BASIC:Errors#domain|ERR:DOMAIN]]''' for any numbers except the ones mentioned above.

= Related Commands =

* [[TI-BASIC:Npr|NPr]]
* [[TI-BASIC:Ncr|NCr]][[Category:TI-BASIC]]
[[Category:TIBD]]

TI-BASIC:Factorial - Revision history

Maintenance script: Initial automated import