Diketahui barisan geometri suku ke 7=12 dan suku ke10=96 tentukan rasio ,dan suku ke3​

U10 = a . r^9 = 96

U7 = a . r^6 = 12

——————— ÷

r³ = 8

r = ³√8

r = 2

a . r^6 = 12

a . (2)^6 = 12

a . 72 = 12

a = 12/72

a = 1/6

maka,

U3 = a . r²

U3 = 1/6 × (2)²

U3 = 1/6 × 4

U3 = 4/6

U3 = 2/3

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