1. The problem statement, all variables and given/known data To find convergence, why can't I divided by the largest n in the denominator in this problem: SUM n_infinity 1/(n^2 - 4n + 4) ? its suggested to use the comparison test. (I think SUM stands for E Reimann sum correct?) but in this problem, I can easily find convergence by dividing by large n in the denominator: lim n->infinity 3n^2/(7n^2 + 1) ? any explanation please. thanks. 2. Relevant equations 3. The attempt at a solution its all above. thanks.