Difference between revisions of "Manuals/calci/FACTORIAL"
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| − | + | <div style="font-size:30px">'''FACTORIAL (Number)'''</div><br/> | |
| + | *<math>Number</math> is any positive integer. | ||
| + | |||
| + | ==Description== | ||
| + | *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 <math>FACTORIAL (Number)</math>,<math>Number</math> is any positive integer. | ||
| + | *So the factorial <math>n!</math> is defined for a positive integer n as: | ||
| + | <math>n!=n(n-1)...2·1</math>. | ||
| + | *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. | ||
| + | |||
| + | ==Examples== | ||
| + | #FACTORIAL(9) = 362880 | ||
| + | #FACTORIAL(4.3) = 24 | ||
| + | #FACTORIAL(54) = 2.308436973392414e+71 | ||
| + | #FACTORIAL(-3) = NaN | ||
| + | |||
| + | ==See Also== | ||
| + | *[[Manuals/calci/FACTDOUBLE | FACTDOUBLE]] | ||
| + | |||
| + | ==References== | ||
| + | *[http://en.wikipedia.org/wiki/Factorial Factorial] | ||
Revision as of 14:50, 8 March 2017
FACTORIAL (Number)
- is any positive integer.
is any positive integer.Description
- 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 , is any positive integer.
- So the factorial is defined for a positive integer n as:
,
is defined for a positive integer n as:Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle 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.
Examples
- FACTORIAL(9) = 362880
- FACTORIAL(4.3) = 24
- FACTORIAL(54) = 2.308436973392414e+71
- FACTORIAL(-3) = NaN