Question

calcule a soma dos infinitos termos da PG = (5,15,45...)

Answer 1

$> resolucao \\ \\ q = \frac{a2}{a1} \\ q = \frac{15}{5} \\ q = 3 \\ \\ \\ s \: = \frac{a1}{1-q} \\ \\ s \: = \frac{5}{1-3} \\ \\ s \: = - \frac{5}{2} \\ \\ > < > < > < > < > < >$