CalculusHardInfinite Sequences and Series ShareInfinite Sequences and Series · Hard problemUse the ratio test on ∑n=1∞3nn!\displaystyle\sum_{n=1}^{\infty}\frac{3^{n}}{n!}n=1∑∞n!3n. State LLL and conclude. Show answer Walk through it step by step Practice more like this Review this concept