Convergence of a series (using the comparation test ?) I'll be glad to get some help in this one :)
$a_n>0$ i a sequence such that the series $\sum a_n$ converges.
Prove that the series $\sum \frac{\sqrt{a_n}}{n}$ converges.
I thought of using the comparation test but thats it.
I'm sorry I didn't know how to write the sigma letter for series :/
Thanks

Regard the partial sums as inner products and use the Cauchy-Schwarz inequality.
