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Mathematics, 17.04.2021 19:30 Eni1127

Each of the following statements is an attempt to show that a given series is convergent or divergent using the Comparison Test (NOT the Limit Comparison Test). For each statement, enter Correct if the argument is valid, or enter Incorrect if any part of the argument is flawed. Note: if the conclusion is true but the argument that led to it was wrong, you must enter Incorrect. 1. For all n>1, sin2(n)n2<1n2, and the series βˆ‘1n2 converges, so by the Comparison Test, the series βˆ‘sin2(n)n2 converges.
2. For all n>1, arctan(n)n3<Ο€2n3, and the series Ο€2βˆ‘1n3 converges, so by the Comparison Test, the series βˆ‘arctan(n)n3 converges.
3. For all n>2, 1n2βˆ’5<1n2, and the series βˆ‘1n2 converges, so by the Comparison Test, the series βˆ‘1n2βˆ’5 converges.
4. For all n>2, n+1βˆ’βˆ’βˆ’βˆ’βˆ’βˆšn>1n, and the series βˆ‘1n diverges, so by the Comparison Test, the series βˆ‘n+1βˆ’βˆ’βˆ’βˆ’βˆ’βˆšn diverges.
5. For all n>2, nn3βˆ’2<2n2, and the series 2βˆ‘1n2 converges, so by the Comparison Test, the series βˆ‘nn3βˆ’2 converges.
6. For all n>1, n2βˆ’n3<1n2, and the series βˆ‘1n2 converges, so by the Comparison Test, the series βˆ‘n2βˆ’n3

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