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ComposeSeries

ComposeSeries[series1, series2, ...]
composes several power series.
  • ComposeSeries[series1, series2, ...] effectively replaces the variable in series1 by series2 and so on.
  • Two series can only meaningfully be composed when the point about which the first series is expanded corresponds to the limiting value of the second series at its expansion point.
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The limiting value of the second series must coincide with the expansion point of the first series:
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