We can use the formula for the sum of a geometric series to quickly and accurately convert a repeating decimal into a ratio of integers, in other words, into a fraction with whole numbers in the numerator and denominator.
Read MoreOnly if a geometric series converges will we be able to find its sum. The sum of a convergent geometric series is found using the values of ‘a’ and ‘r’ that come from the standard form of the series.
Read MoreBefore we can learn how to determine the convergence or divergence of a geometric series, we have to define a geometric series. Once you determine that you’re working with a geometric series, you can use the geometric series test to determine the convergence or divergence of the series.
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