³log(4/9-3^x)= x-1. Tentukan nilai x?
Jawaban Terkonfirmasi
³log (4/9-3ˣ) = x-1
³log(4/9-3ˣ) = ³log 3ˣ⁻¹
4/9-3ˣ = 3ˣ⁻¹
4/9 = (1/3).3ˣ + 3ˣ
4/9 = 3ˣ(1+(1/3))
4/9 = 3ˣ(4/3)
1/3 = 3ˣ
3⁻¹ = 3ˣ
x = -1