Pada barisan geometri dengan U2=2 dan U4=1/4 tentukan suku ke-8

U2 = ar
U2 = 2
ar = 2
a = 2/r

U4 = ar³
U4 = 1/4
ar³ = 1/4
a = (1/4)/r³

a = a
2/r = (1/4)/r³
r³/r = (1/4)/2
r² = 1/8
r = √(1/8)
r = 1/4 √2

a = 2/r
a = 2/(1/4 √2)
a = 8/√2
a = 4√2

U6 = ar^5
U6 = 4√2 x (1/4 √2)^5
U6 = 1/256 x 8
U6 = 1/32

semoga membantu ^^