NumericalCalculus`

EulerRatio

is an option to EulerSum that specifies the parameter to use in the generalized Euler transformation.

更多信息和选项

To use EulerRatio, you first need to load the Numerical Calculus Package using Needs["NumericalCalculus`"].
Valid settings for EulerRatio are Automatic, a single ratio, or a list of ratios or {ratio,degree+1} pairs. In the case of a list, the various ratios are used successively in iterated Euler transformations.
With the default setting Automatic, the value used for EulerRatio is based on the ratio of successive terms in the series.

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