- #1

joao_pimentel

- 68

- 0

I'm trying to find out the nature of this serie

[tex]\sum_{n=1}^{\infty}\left[ e^{1/n}-e^{-1/n}\right][/tex]

I know the ratio and root tests are inconclusive, just the comparision test works (it diverges)

But with which expression shall I compare?

Thank you so much