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=FACTDOUBLE(number)
| Parameter | Deskripsi |
|---|---|
number |
A number greater than or equal to -1. |
For even numbers, the double factorial is the product of all even integers less than or equal to number and greater than or equal to 2. For example, t
=FACTDOUBLE(8)
=8*6*4*2
=384
For odd numbers, the double factorial is the product of all odd integers less than or equal to number and greater than or equal to 1. The double facto
=FACTDOUBLE(7)
=7*5*3*1
=105
The double factorial for zero and -1 are defined as 1:
=FACTDOUBLE(0) // returns 1
=FACTDOUBLE(-1) // returns 1