Determine the radius of convergence RRR for the power series ∑n=0∞xn4n\sum_{n=0}^{\infty} \frac{x^n}{4^n}∑n=0∞4nxn.
R=1R = 1R=1
R=2R = 2R=2
R=4R = 4R=4
R=∞R = \inftyR=∞