$\sum_{n=2}^{\infty} \frac{(-1)^n}{2^{2n}}$
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A geometric series is a series in which each term is obtained by multiplying the previous term by a constant ratio. To check if the series is geometric, we need to examine the ratio between consecutive terms. If the ratio is constant, then the series is Show more…
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State whether or not the series is geometric. If it is geometric and converges, find the sum of the series. $$\sum_{n=2}^{\infty} \frac{(-1)^{n}}{2^{2 n}}$$
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