tentukan rasio dari barisan geometri berikut a. 5, 15, 45 ,135 b. 1/2, 1/4, 9/4, c. 20, 10, 5 tolong bantuannya

Bab Barisan dan Deret
Matematika SMP Kelas IX

geometri
a] 5, 15, 45, 135
r = U2/U1
r = 15/5
r = 3

b] 1/2, 1/4, ...
r = U2 / U1
r = 1/4 : 1/2
r = 1/4 x 2/1
r = 2/4
r = 1/2

c] 20, 10, 5
r = U2/U1
r = 10/20
r = 1/2

ralat yg ke 2
u1= 1/2
u2= 1/4
r = u2/u1
r= 1/4 / 1/2
r= 1/2






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