tolong bantu jawab, pakai cara
Diket
U5 = 48
U8 = 384
Ditanya = U3...?
Jawab
U8 = a × r^7 = 384
U5 = a × r^4 = 48 ÷
r³ = 8
r = ³√8
r = ³√2³
r = 2
a × r^4 = 48
a × (2)^4 = 48
a × 16 = 48
a = 48/16
a = 3
maka,
U3 = a × r²
= 3 × (2)²
= 3 × 4
= 12
semoga membantu
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