Question

Does this series converge or diverge?

∞
∑ [e^(-7n) - e^(7/(n+1)]
n=1

Answer 1

a few clues, the first piece is a geometric series, the second limit goes to 1

Answer 2

I am getting lim -1; suggests converges to -1

Answer 3

What test did you use for the second half?

Answer 4

No test. Just lim as n goes to infinity