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InverseSeries
InverseSeries[
s
,
x
] takes the series s generated by Series, and gives a series for the inverse of the function represented by s.
InverseSeries performs "reversion" of series.
Given a series  , InverseSeries[
s
,
x
] gives a series for  such that  .
See the Mathematica book: Section 3.6.4.
See also: Solve, InverseFunction.
Further Examples
Composing a series with its inverse gives the identity.
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