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Verified answer
Bab Fungsi KomposisiMatematika SMA Kelas X
f(x) = 3²ˣ⁻¹
y = 3²ˣ⁻¹
³log y = 2x - 1
2x - 1 = ³log y
2x = 1 + ³log y
x = (1 + ³log y)/2
f⁻¹ (x) = (1 + ³log x)/2