Math Problem Statement
Determine whether the following series converges. Justify your answer. Summation from k equals 3 to infinity StartFraction 1 Over k Superscript four ninths Baseline ln k EndFraction Question content area bottom Part 1 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (Type an exact answer.) A. Let a Subscript kequalsStartFraction 1 Over k Superscript four ninths Baseline ln k EndFraction and b Subscript kequalsStartFraction 1 Over k ln k EndFraction . Since ModifyingBelow lim With k right arrow infinityStartStartFraction StartFraction 1 Over k Superscript four ninths Baseline ln k EndFraction OverOver StartFraction 1 Over k ln k EndFraction EndEndFraction equalsinfinity and Summation from k equals 3 to infinity StartFraction 1 Over k ln k EndFraction diverges, the series diverges by the Limit Comparison Test. B. Let a Subscript kequalsStartFraction 1 Over k Superscript four ninths Baseline ln k EndFraction and b Subscript kequalsStartFraction 1 Over k ln k EndFraction . Since ModifyingBelow lim With k right arrow infinityStartStartFraction StartFraction 1 Over k Superscript four ninths Baseline ln k EndFraction OverOver StartFraction 1 Over k ln k EndFraction EndEndFraction is nonnegative and Summation from k equals 3 to infinity StartFraction 1 Over k ln k EndFraction converges, the series converges by the Limit Comparison Test. C. The Ratio Test yields requals enter your response here. This is greater than 1, so the series diverges by the Ratio Test. D. The terms of the series are alternating and their limit is enter your response here, so the series diverges by the Alternating Series Test. E. The Ratio Test yields requals enter your response here. This is less than 1, so the series converges by the Ratio Test. F. The terms of the series are alternating and their limit is enter your response here, so the series converges by the Alternating Series Test.
Solution
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Math Problem Analysis
Mathematical Concepts
Series Convergence
Limit Comparison Test
Divergent Series
Formulas
Limit Comparison Test formula: lim(k→∞) (a_k / b_k) = L
Theorems
Limit Comparison Test
Divergence of Harmonic Series with Logarithmic Terms
Suitable Grade Level
College-level Calculus
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