Find the radius of convergence RRR for the power series ∑n=1∞3nnxn\sum_{n=1}^{\infty} \frac{3^n}{n} x^n∑n=1∞n3nxn.
R=13R = \frac{1}{3}R=31
R=3R = 3R=3
R=1R = 1R=1
R=0R = 0R=0