Summary The double factorial of n may be defined inductively by (n + 2)!! = (n + 2)(n)!! with (0)!! = (1)!! = 1. Alternatively we may define this notion by the two ...
In Microsoft Excel, a FACT or FACTDOUBLE function are both a Math and Trigonometry function. Math and Trigonometry functions in Excel perform mathematical calculations, including basic arithmetic, ...
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