10.6 Convergence of Series
Checkpoint 6
Determine what the Ratio Test says about convergence of the arctangent series
arctan
x
=
x
-
1
3
x
3
+
1
5
x
5
-
⋯
+
(
-
1
)
k
x
2
k
+
1
2
k
+
1
+
⋯
.
Answer