Mathematics, 21.10.2021 02:20 girlchamp654

Let {an}n=1 be a sequence and let sn =Xnk=1ak. If sn = 2n + 1 for all n ≥ 1, calculate a3.

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Let {an}n=1 be a sequence and let sn =Xnk=1ak. If sn = 2n + 1 for all n ≥ 1, calculate a3....