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Bab Fungsi KomposisiMatematika SMA Kelas X
f(x) = 5³ˣ ⁺ ¹
(f⁻¹ o g⁻¹) (p) = (g o f)⁻¹ (p) = 2
(gof) (x) = g (5ˣ ⁺ ¹)
(gof) (x) = ⁵log 5³ˣ⁺¹ + 3
(gof) (x) = (3x + 1) ⁵log 5 + 3
(gof) (x) = 3x + 1 + 3
(gof) (x) = 3x + 4 = y
3x = y - 4
x = (y - 4)/3
(gof)⁻¹ (p) = (p - 4)/4
(p - 4)/4 = 2
p - 4 = 2 . 4
p = 8 + 4
p = 12
jawabannya B