Question Number 32299 by abdo imad last updated on 22/Mar/18
$${find}\:{tbe}\:{nature}\:{of}\:{the}\:{serie}\:\sum_{{n}\geqslant\mathrm{1}} \:\frac{{e}^{\frac{\mathrm{1}}{{n}}} \:\:+{e}^{−\frac{\mathrm{1}}{{n}}} }{{n}}\:. \\ $$$$ \\ $$
find-tbe-nature-of-the-serie-n-1-e-1-n-e-1-n-n-