Question

d) (2, 2, 22, 4, ...) é pg?​

Answer 1

Resposta:

a1 = ( 1/2)² = 1/4

a2 = (1/2)⁴ = 1/16

a3 = ( 1/2)⁶ = 1/64

q = 1/16 : 1/4 = 1/16 * 4/1 = 4/16 = 1/4 ****

PG INFINITA

S = a1 / ( 1 - q)

S = 1/4 /( 1/1 - 1/4)

S = 1/4 /( 3/4 )

S = 1/4 : 3/4 = 1/4 * 4/3 = 4/12 = 1/3 ***