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Genfact

Function: genfact (<x>, <y>, <z>) Returns the generalized factorial, defined as x (x-z) (x - 2 z) ... (x - (y - 1) z). Thus, for integral <x>, genfact (x, x, 1) = x! and genfact (x, x/2, 2) = x!!.

genfact (n, n/2,2);

(%o1)                                true
(%i2) 

Related Examples

genfact

genfact (n, n/2,2);

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genfact(x, 4, -1);

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genfact

genfact (n, n/2,2);

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genfact

genfact(x, 4, -1);

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