Which test is most useful to prove ∑n=1∞n+5n3+1\sum_{n=1}^{\infty} \frac{n+5}{n^3+1}∑n=1∞n3+1n+5 converges?
Ratio Test
Limit Comparison Test with bn=1n2b_n = \frac{1}{n^2}bn=n21
Divergence Test
Geometric Series Test