I need to find the precise range of the following sum to infinity:
$$\sum_{n=1}^\infty\frac{x^n}{4^nn}$$
Can someone post how to do it because I have no idea, I'm also given that it converges...
I need to find the precise range of the following sum to infinity:
$$\sum_{n=1}^\infty\frac{x^n}{4^nn}$$
Can someone post how to do it because I have no idea, I'm also given that it converges...