Respuesta :

[tex]\displaystyle\sum_{n\ge0}\frac{(\ln3)^n}{n!}=e^{\ln3}=3[/tex]

which follows from the power series representation for [tex]e^x[/tex],

[tex]e^x=\displaystyle\sum_{n\ge0}\frac{x^n}{n!}[/tex]

and taking [tex]x=\ln3[/tex].