QuestionUse the Root Test to determine whether the series convergent or divergent. $$\sum_{n=2}^{\infty}\left(\frac{-7 n}{n+1}\right)^{3 n}$$
Identify $a_{n}$. $\square$
Evaluate the following limit. $$\lim _{n \rightarrow \infty} \sqrt[n]{\left|a_{n}\right|}$$ $\square$
Since $\lim _{n \rightarrow \infty} \sqrt[n]{\left|a_{n}\right|}$ $\square$ ? 1, $\square$ -Select--