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genfunc[rgf_expand] - expand rational generating functions
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Calling Sequence
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rgf_expand(Fz, z, n)
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Parameters
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Fz
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rational generating function of z
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z
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name, the generating function variable
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n
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name, the index variable for the expansion of Fz
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Description
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The function finds the closed form expansion of the nth term in the sequence encoded by the rational generating function Fz.
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If the denominator of Fz has polynomial factors of degree greater than two that cannot be factored over the rationals, an inert Sum expression involving RootOf values is returned.
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The global variables _J and _R are used in the RootOf expressions.
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The command with(genfunc,rgf_expand) allows the use of the abbreviated form of this command.
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Examples
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>
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Download Help Document
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