Abstract
Based on a continuity property of the Hadamard product of power series we derive results concerning the rate of convergence of the partial sums of certain polynomial series expansions for Bessel functions. Since these partial sums are easily computable by recursion and since cancellation problems are considerably reduced compared to the corresponding Taylor sections, the expansions may be attractive for numerical purposes. A similar method yields results on series expansions for confluent hypergeometric functions.
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Müller, J. Series expansions for computing Bessel functions of variable order on bounded intervals. Numerical Algorithms 24, 299–308 (2000). https://doi.org/10.1023/A:1019149428006
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DOI: https://doi.org/10.1023/A:1019149428006