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First find r : r = a 2 a 1 = 12 8 = 3 2 Since r = 3 2 is not less than one, the series does not converge. That is, it has no sum. Subjects Near Me Popular Cities Ann Arbor Tutoring Virginia Beach

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r = common factor. Derivation for Geometric Series Formula. Suppose a Geometric Series for n terms: S n = a + ar + ar 2 + ar 3 + . + ar n-1 ⇢ (1) Multiplying both sides by the

When there is a common ratio ( r) between consecutive terms, we can say this is a geometric sequence. If the first term ( a1) is a, the common ratio is r, and the general term is an, then: r =

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