Difference between revisions of "Manuals/calci/FACTORIAL"

Latest revision as of 04:22, 14 April 2022

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 14: / Line 14: @@
 ==Examples==
 #FACTORIAL(9) = 362880
-#FACTORIAL(4.3) = 24
+#FACTORIAL(4.3) = 38.0779764499523
 #FACTORIAL(54) = 2.308436973392414e+71
-#FACTORIAL(-3) = NaN
+#FACTORIAL(-3) = Infinity
+#a=(5!)! = 6.689502913449128e+198
+==Related Videos==
+{{#ev:youtube|v=pxh__ugRKz8|280|center|Factorials}}
 ==See Also==
 *[[Manuals/calci/FACTDOUBLE | FACTDOUBLE]]
 *[[Manuals/calci/FACTUNTIL | FACTUNTIL ]]
+*[[Z_API_Functions | List of Main Z Functions]]
+*[[Z3 |  Z3 home ]]
 ==References==
 *[http://en.wikipedia.org/wiki/Factorial Factorial]
+*[[Z_API_Functions | List of Main Z Functions]]
+*[[ Z3 |   Z3 home ]]