Math 2260 Exam #3 Practice Problem Solutions

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Math 2260 Exam #3 Practice Problem Solutions 1.Does the following series converge or diverge? Explain your answer. X1 n=0 2n 3n+ n3: Answer: Since 3 n+ n3 >3 for all n 1, it follows that 2n 3n+ n3 < 2n 3n = 2 3 n: Therefore, X1 n=0 2n 3n+ n3 < X1 n=0 2 3 n = 1 1 2 3 = 3: Hence, the given series converges.

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