I had this question where it was given $$a_n > 0$$ and $$\sum a_n$$ is divergent and I was to prove that $$\sum\frac{a_n}{1 + na_n}$$ diverges too, to be frank I could not make any worthy headway on this problem, so any ideas ?
Asked
Active
Viewed 342 times
0
-
8Isn't that the same? http://math.stackexchange.com/questions/130471/convergence-divergence-of-sum-fraca-n1na-n-when-a-n-geq0-and-sum-a-n?rq=1 – Nyfiken Oct 30 '15 at 18:08
-
Yeah it's the same one – Arnav Das Oct 30 '15 at 18:17