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www.khanacademy.org/math/algebra/sequences/constructing...

Learn how to find recursive formulas for arithmetic sequences. For example, find the recursive formula of 3, 5, 7,...

mathbitsnotebook.com/Algebra2/Sequences/SSRefreshRecursive...

To summarize the process of writing a recursive formula for an arithmetic sequence: 1. Determine if the sequence is arithmetic (Do you add, or subtract, the same amount from one term to the next?2. Find the common difference.The number you add or subtract.

www.mathwords.com/r/recursive_formula.htm

Recursive Formula. For a sequence a 1, a 2, a 3, . . . , a n, . . . a recursive formula is a formula that requires the computation of all previous terms in order to find the value of a n. Note: Recursion is an example of an iterative procedure.

www.purplemath.com/modules/nextnumb3.htm

While recursive sequences are easy to understand, they are difficult to deal with, in that, in order to get, say, the thirty-nineth term in this sequence, you would first have to find terms one through thirty-eight. There isn't a formula into which you could plug n = 39 and get the answer.

www.khanacademy.org/math/algebra/sequences/constructing...

Learn how to convert between recursive and explicit formulas of arithmetic sequences. If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

www.khanacademy.org/math/algebra/sequences/constructing...

Sal finds the recursive formula of the arithmetic sequence 4, 3⅘, 3⅗, 3⅖,... If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

www.youtube.com/watch?v=mcNGhrvp52s

How to write a recursive or explicit equation for a sequence of values.

www.khanacademy.org/math/algebra/sequences/constructing...

Learn how to find explicit formulas for arithmetic sequences. For example, find an explicit formula for 3, 5, 7,...

www.wikihow.com/Solve-Recurrence-Relations

How to Solve Recurrence Relations. In trying to find a formula for some mathematical sequence, a common intermediate step is to find the nth term, not as a function of n, but in terms of earlier terms of the sequence. For example, while...