Use the Ratio Test to determine whether the series is convergent or divergent.
[infinity] (−9)n
n2
n = 1
Identify
an.
(−9)nn2​
Evaluate the following limit.
lim n → [infinity]
an + 1
an
Since
lim n → [infinity]
an + 1
an
? < = > 1,
---Select--- the series is convergent the series is divergent the test is inconclusive .