In Exercises 5168, determine the convergence or divergence of the series
Chapter 9, Problem 61(choose chapter or problem)
In Exercises 51-68, determine the convergence or divergence of the series using any appropriate test from this chapter. Identify the test used.
\(\sum_{n=1}^{\infty} \frac{\cos n}{3^{n}}\)
Text Transcription:
sum_n=1 ^infty cos n / 3^n
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