Determine whether or not the following series converge. (You do not have to calculate the sums!) Justify your answers. [Hint: Divergence test or Comparison test] 3n-1 n2 +1 3 a) b) Ση Ο Σ d) 7" + 3 n=1 2n2 + 3 2n2 +n+1 n=1 n=1 n=1

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A: here we use the generalized ratio test  so option (a) is true  and by ratio test

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