$$a5=1944,r=3(1termino)$$
$r=0\text{, }t\in \mathrm{R}\text{, }a_{5}=1944\text{, }o\in \mathrm{R}$
$r\in \mathrm{R}\text{, }t=\frac{1}{3eo}\text{, }a_{5}=1944\text{, }o\neq 0$
