Question

Escreva a PG de cinco termos que tem a₁ = -3 e q = ¹/₂.

Answer 1

(-3, -3/2, -3/4,-3/8, -3/16)

Basta multiplicar 1/2 por cada termo antecessor.

Answer 2

$a_1=-3\\\\ a_2=a_1*q = -3*\frac{1}{2} = -\frac{3}{2}\\\\ a_3=a_2*q=-\frac{3}{2}*\frac{1}{2} = -\frac{3}{4}\\\\ a_4=a_3*q = -\frac{3}{4}*\frac{1}{2}=-\frac{3}{8}\\\\ a_5=a_4*q=-\frac{3}{8}*\frac{1}{2}=-\frac{3}{16}$