+∞o Letan be a series such that Sk = a₁ + a₂ + +ak = 2k k+2' for k € {1,2,3,...}. Identify and n=1 justify whether each of the following series converges or diverges. If convergent, find the sum. +∞o (2) Σ an n=1 +∞o Sn (b) n² n=1

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A: see my solution