Ciri barisan geometri Rasio (r) sama 2 , 4 , 8 , 1 6 , … = 2 = = = = −1 1 1 = −1 ℎ Jwb = 3 3,9, 27,, … 9 ?… = −1 = 2 = 3 = 3 6 1 5 6 = 3 3 6−1 = 3. 3 = 3 6