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Nov 2018 p11 q4
894
The first term of a series is 6 and the second term is 2. For the case where the series is a geometric progression, find the sum to infinity.
Solution
The first term of the geometric series is given as 6, and the second term is 2. The common ratio \(r\) can be found by dividing the second term by the first term:
\(r = \frac{2}{6} = \frac{1}{3}\)
The formula for the sum to infinity of a geometric series is: