I'm going through old exams for my Calc III course and came across a problem that I did not know how to do. The problem is:
Find the interval of convergence of the series
and determine whether the series converges absolutely or conditionally at the endpoints.
I can't think of any tests that would work. The Ratio test doesn't yield anything solvable and the Root Test seems also useless here. The Comparison Test might work but I'm having trouble finding a series to compare it to.
Thank you in advance for any help you can give.