Question

Tentukan rasio & suku ke4 suatu barisan geometri.
A. a = 2 dan u5 = 162

Answer 1

Answer 2

Un=a x r^n-1
U5=a x r^4
162=2 x r^4
162 ÷ 2 = r^4
81 = r^4
3 = r

U4 = a x r^3
U4 = 2 x 3^3
U4 = 2 x 27
U4 = 54

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