Question

Achar o décimo termo (9,3,,,)

Answer 1

Trata-se de um PG
a1=9
q=1\3
$an=a1.q ^{n-1}$
$a10=3.( \frac{1}{3})^{10-1}$
$a10=3.( \frac{1}{3} ) ^{9}$
$a10=( \frac{1}{3} ) ^{8}$