infinte series

[kayron]

1. The problem statement, all variables and given/known data



2/3!+4/5!+6/7!+....to infinity is equal to?

[lewando]

Have you done any problems similar to this? Where are you getting stuck?

[kayron]

yes i have.
the trick is to translate this into an expression of known a known infinite series, like that of e or e^-1
here the answer is e^-1

[hunt_mat]

Write down e and e^-1, what do you find?