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type/ratseq - tests an expression to determine if it defines a sequence encoded by a rational generating function
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Calling Sequence
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type(expr, 'ratseq'(n))
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Parameters
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expr
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expression for the nth term in a sequence
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n
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name, index variable of the sequence
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Description
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Determines if the sequence whose nth term is expr has a rational generating function. Such sequences are constructed from polynomials in n and constants to a linear power of n using the operations addition, subtraction, and multiplication.
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Examples
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