For which ppp does the series ∑n=1∞npn3\sum_{n=1}^{\infty} \frac{n^p}{n^3}∑n=1∞n3np converge?
p<2p < 2p<2
p>2p > 2p>2
p<3p < 3p<3
p=3p = 3p=3