Revision as of 17:37, 11 January 2014

FACT(N)

FACT() calculates the factorial of a number $N$ as 1*2*.....* $N$ .

FACT(N)

e.g. FACT(3) displays 6 as a result.

The factorial of a number $N$ is the product of all positive integers, less than or equal to $N$ . It is calculated as -

$N!=N*(N-1)*(N-2)*.....1$

e.g. FACT(1..5) calculates factorial of numbers from 1 to 5 and displays result as 1 2 6 24 120.

@@ Line 1: / Line 1: @@
 =FACT(N)=
-*where, <math>N</math> is a non-negative number whose factorial is to be found.
+*where, <math>N</math> is a positive integer whose factorial is to be found.
 FACT() calculates the factorial of a number <math>N</math> as 1*2*.....*<math>N</math>.
@@ Line 15: / Line 15: @@
 <math>N! = N * (N-1) * (N-2) * ..... 1</math>
-*<math>N</math> should be a positive integer. Else Calci displays #N/A error message.
+*If <math>N</math> is negative, Calci displays #N/A error message.
 *If <math>N</math> is not an integer, it is truncated to calculate the factorial.
+*If <math>N</math> is invalid, Calci displays #NULL error message.
 *The factorial of series of numbers can be calculated as -
 e.g. FACT(1..5) calculates factorial of numbers from 1 to 5 and displays result as '''1  2  6  24  120'''.