Converting Recursive and Explicit Forms of Arithmetic Sequences

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This video introduces the idea of converting between explicit and recursive formulas for arithmetic sequences. Generally, in these example problems, either a recursive or explicit formula is given and the other one needs to be found.

It is usually helpful to have the general formulas for both recursive and explicit forms, but it is also possible to write out the sequence using the given formula and construct the other formula from the sequence.

Khan Academy exercise to practice:

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