For a series ∑anxn\sum a_n x^n∑anxn, if the limit limn→∞∣an+1an∣=L\lim_{n \to \infty} |\frac{a_{n+1}}{a_n}| = Llimn→∞∣anan+1∣=L, what is the radius of convergence RRR?
R=LR = LR=L
R=1LR = \frac{1}{L}R=L1
R=0R = 0R=0
R=∞R = \inftyR=∞