What is the radius of convergence for the power series ∑n=0∞xn5n\sum_{n=0}^{\infty} \frac{x^n}{5^n}∑n=0∞5nxn?
R=5R=5R=5
R=1R=1R=1
R=1/5R=1/5R=1/5
R=∞R=\inftyR=∞