Consider the series ∑n=0∞xn3n\sum_{n=0}^{\infty} \frac{x^n}{3^n}∑n=0∞3nxn. What is the radius of convergence RRR?
R=1R=1R=1
R=2R=2R=2
R=3R=3R=3
R=∞R=\inftyR=∞