Given an>0a_n > 0an>0 and limn→∞n2an=0\lim_{n \to \infty} n^2 a_n = 0limn→∞n2an=0, what can you conclude about ∑an\sum a_n∑an?
It diverges.
It converges.
The test is inconclusive.
It converges only if ana_nan is alternating.