I just took a math test, and there was one problem on it that I was having trouble with. (What makes it more ridiculous was that it was actually on the test twice written two different ways because of the nature of negative exponents...)

We had to test the convergence of the series

(from n=1 to infinity)

((n+1)^2)/(e^(n+1))

using the integral test.

It would be easy enough to do the ratio test, but technically we haven't learned that yet.