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Student Support Forum: 'Recursively defined Double Factorial' topicStudent Support Forum > General > Archives > "Recursively defined Double Factorial"

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Josh Holmes
05/15/12 10:55am

My goal here is to define the function doublefactorial. The domain of this function is the set of positive integers. For a positive even integer n the value of DoubleF[n] is the product of all positive even integers which are <=n. For a positive odd integer n the value DoubleF[n] is the product of all positive odd integers which are<=n.

I want to make a recursive definition of this function but do not know how. Here is some code so far:


Clear[MyF1, n];
MyF1[1] = 1;
MyF1[n_Integer] /; (n > 0) := MyF1[n] = n*MyF1[n - 1]

Help plz?

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Subject (listing for 'Recursively defined Double Factorial')
Author Date Posted
Recursively defined Double Factorial Josh Holmes 05/15/12 10:55am
Re: Recursively defined Double Factorial Bill Simpson 05/15/12 10:42pm
Re: Recursively defined Double Factorial Chenyu Lue 05/16/12 05:59am
Re: Re: Recursively defined Double Factorial Peter Pein 05/20/12 11:53am
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