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what is the general formula for a geometric sequence. We want to find a such that the sequence u n a n is geometric of parameter a it is the most natural choice because if b 0 we already are in this case. There are two types of formulas for a geometric sequence.
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Given the first several terms of a geometric sequence write its recursive formula. But in this case the second term has to be negative an a1 - dn-1. R 3 the common ratio The Rule for any term is.
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The general formula for determining the sum of a geometric series is given by. The general formula to find the nth term is. Similarly for a finite geometric sequence a formula is fractextfirst - textnext after last1 - textratio The infinite version can be viewed as a special case where textnext after last 0. Given the first several terms of a geometric sequence write its recursive formula.
