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powseries[compose] - composition of formal power series
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Calling Sequence
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compose(a, b)
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Parameters
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a, b
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formal power series
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Description
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The function compose(a, b) computes and returns the formal power series  , the composition of a and b. This power series is:  .
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Note that  must be 0 to ensure that the composition is well defined. Otherwise, compose returns an error message.
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The command with(powseries,compose) allows the use of the abbreviated form of this command.
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