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how to recursive formula. For example assume a formula as follows. A n 1 a n r.
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A n a n-1 5 The first term of the sequence is a 13. Given a recursive formula with two initial terms write the firstndisplaystyle n n terms of a sequence. Recursive formulas give us two pieces of information.
Identify the initial terma 1displaystyle a_ 1 a1 which is given as part of the formula.
In a geometric sequence where the ratio of the given term is constant to the previous term the recursive formula is expressed as. A n a n-1 common difference a 1 first term Finding the Formula given a sequence without the first term 1. A n a n-1 5 The first term of the sequence is a 13. Identify the initial terma 1displaystyle a_ 1 a1 which is given as part of the formula.
