The series is geometric with common ratio r = 1/3 and first term a = -972.
Since r is in the interval (-1,1), the sum of the series is finite and is equal to a / (1-r) = -972 / (2/3) = -1458
The series is geometric with common ratio r = 1/3 and first term a = -972.
Since r is in the interval (-1,1), the sum of the series is finite and is equal to a / (1-r) = -972 / (2/3) = -1458
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