Tentukan suku pertama dan rasio dari barisan geometri berikut.
a. 1, 3, 9, ...
b. 6, 18, 54, 162, ....
c. 4, 20, 100, 500, ....
d. 1200, 600, 300, ...
(pake cara)
a. 1, 3, 9, ...
b. 6, 18, 54, 162, ....
c. 4, 20, 100, 500, ....
d. 1200, 600, 300, ...
(pake cara)
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U1 = 1
B. r= U2/U1 = 18/6 = 3
U1 = 6
C. r= U2/U1 = 20/4 = 5
U1 = 4
D. r= U2/U1 = 600/1200 = 1per 2
U1= 1200