Manuals/calci/FACTDOUBLE

Syntax

Remarks

Examples

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Description

FACTDOUBLE

FACTDOUBLE(numr)

Where num is the value to which double factorial is returned.

· FACTDOUBLE returns the error value when number is nonnumeric or negative

Formula:-

· If number is even, the following formula is to be used

If number is odd:

It calculates the double factorial of a number.

Lets see an example in (Column1, Row 1)

FACTDOUBLE (numr)

FACTDOUBLE (C1R1)'

That is FACTDOUBLE (9) is 945