gfun[listtohypergeom] - find a hypergeometric generating function
gfun[seriestohypergeom] - find a hypergeometric generating function
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Calling Sequence
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listtohypergeom(l, x, [typelist])
seriestohypergeom(s, [typelist])
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Parameters
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l
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list
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x
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name; variable name
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typelist
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(optional) list of generating function types. The default is 'ogf','egf'. For a complete list of types, see gftypes.
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s
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series
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Description
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The listtohypergeom(l, x, [typelist]) command computes a hypergeometric series in x for the generating function of the expressions in l. This generating function has its type specified by typelist, for example, ordinary (ogf) or exponential (egf). For a complete list of available generating function types, see gftypes.
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You should specify at least 6 terms in the list l.
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The seriestohypergeom(s, x, [typelist]) command computes a hypergeometric series in x for the generating function of the expressions in s. This generating function has its type specified by typelist, for example, ordinary (ogf) or exponential (egf). For a complete list of available generating function types, see gftypes.
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You should specify at least 6 terms in the series s.
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If typelist contains more than one element, these types are considered in the order that they are listed.
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If typelist is not specified, the default typelist, 'ogf','egf', is used.
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The function returns a list whose first element is the hypergeometric function. The second element is the generating function type for which an equation was found.
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Examples
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>
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