Possible Duplicate:
Series converges implies $\lim{n a_n} = 0$
Someone can help me? If $(a_n)$ is a decreasing sequence and $\sum a_n$ converges. Then $\lim {(n.a_n)} = 0$.
I don't have idea how to solve this.
Possible Duplicate:
Series converges implies $\lim{n a_n} = 0$
Someone can help me? If $(a_n)$ is a decreasing sequence and $\sum a_n$ converges. Then $\lim {(n.a_n)} = 0$.
I don't have idea how to solve this.