Question

Dados O Termos a1 E A Razao = q, Determine Os 5 Primeiros Termos De Cada PG:?
a) a1= 4, q=3

b)a1=20. q=-2

c)a1=-10, q=1/5

d)a1=√¯3 <== (Raiz De 3), q = -√¯2 <== (Raiz De -2)

Answer 1

$a_{n} = a_{1} * q ^{n-1}$

a) $a_{2} = 4*3^{1} = 12 \\ a_{3} = 4*3^{2} = 4*9=36 \\ a_{4} = 4*3^{3} = 4*27=108 \\ a_{5} = 4*3^{4} = 4*81=324$