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N1 n2. Lim 3n-1/n2+1. Предел 1/n+1 1/n+2. Предел (n+1)^2/2n^2. N(N-1)/2.
Lim 3n-1/n2+1. Предел 1/n+1 1/n+2. Предел (n+1)^2/2n^2. N(N-1)/2.

See also