Question

Calcule o sexto termo da pg: (12,36,108,................)

Answer 1

a1 = 12
a2 =36
a3 = 108

q = 36/12 = 3 ***
a6 = a1 .q⁵ ou   12 .  3⁵  ou   12 * 243 =2 916 ***** resposta

Answer 2

$a_n=a_8=? \\ a_1=12 \\ n=6 \\ r=q=32\div12=3 \\ \\ termo~~geral \\ \\ a_n=a_1.q^{n-1} \\ \\ a_6=12.3^{6-1} \\ \\ a_6=12.3^5 \\ \\ a_6=12.(243) \\ \\ a_6=2916$