P1. For each of the following infinite series: a) Determine n-th partial sum Sn b) Show whether the series is convergent c) If the series is convergent, find the infinite sum (ii) 5 2 + 225 n + (2n-1)²(2n+1)²

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A: As per our guidelines we can only solve one question and rest of the question will be reposted.

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