Is this an alternating series : (-1)^n / ( arctan n ) ^ (n)
I know that the alternating series should have (-1) to any power, but also the signs should be - , + , - , + ..... or the opposit,
The Attempt at a Solution
I am ok with this I know that for testing Con. Or Div. of this we should use the root test
But this series. But the problem is " Is this seris alternating or not"
Becasue if not it will be treated normally with a root test and it will Con.
For me I think that it is not "Alternating "
What do you think ?