Algebra: Sequences of numbers, series and how to sum them

This same topic can be viewed as part of calculus. A sequence s is simply a function defined on the set of natural numbers. So, every natural number 1, 2, 3, ... has its own member of the sequence , , ...
A series is related to a sequence. A series for a given sequence s, is another sequence S where every member is the sum of elements , , ..., .

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