Mathematics

Mathematics

Problem

Consider the series ∑n=1∞(−1)n+1ln⁡nn\displaystyle\sum_{n=1}^{\infty}(-1)^{n+1}\frac{\ln n}{n}. Which of the following best describes its convergence? a) It diverges because ln⁡n\ln n grows without bound, so the alternating terms behave like the harmonic series. b) It converges absolutely. c) It converges conditionally. d) It diverges as a pp-series with p=1p=1.

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