Difference between revisions of "Manuals/calci/FACTORIAL"

Revision as of 02:36, 8 June 2020

FACTORIAL (Number)

This function is showing the result of factorial of a number.
Factorial means the result of multiplying a sequence of descending natural numbers down to 1.
In $FACTORIAL(Number)$ , $Number$ is any positive integer.
So the factorial $n!$ is defined for a positive integer n as:

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

For example 4!=4*3*2*1 = 24.
The given number will truncated to integer if the given number is in Decimal.
This function will returns the result as NaN when the given number is in negative.

@@ Line 16: / Line 16: @@
 #FACTORIAL(4.3) = 24
 #FACTORIAL(54) = 2.308436973392414e+71
-#FACTORIAL(-3) = NaN
+#FACTORIAL(-3) = Infinity
 #a=(5!)! = 6.689502913449128e+198