FACTDOUBLE |
FACTDOUBLE(number) |
Returns the double factorial of a number. |
number | The number you want the double factorial of. |
REMARKS |
* If "number" < 0, then #NUM! is returned. * If "number" is not numeric, then #VALUE! is returned. * If "number" is even then, formula used is: n(n-2)(n-4) to (4)(2). * If "number" is odd then, formula used is: n(n-2)(n-4) to (3)(1). * In Excel 2010 the accuracy of this function has improved. * For the Microsoft documentation refer to support.microsoft.com |
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