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Kelas 10 Matematika
Bab Fungsi Komposisi

f(x) = (ax + b)/(cx + d)
f^-1 (x) = (-dx + b)/(cx - a)

f(x) = (3x + 5)/(x - 5)
f^-1 (x) = (5x + 5)/(x - 3)
f^-1 (x) = 5 (x + 1)/(x - 3)

✩✩ D ✩✩

f(x) = 3x + 5
______
x - 5

f-1 (x) = 5x + 5
_____
x - 3
= 5 ( x -1 )
_______. (D)
x - 3