Jika (f°g)(x)=x^2-4 dan g(x)=x+1, makaf-1(x)=
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Jika (f°g)(x)=x^2-4 dan g(x)=x+1, makaf-1(x)=
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Bab Fungsi
Matematika SMA Kelas XI
(fog) (x) = x² - 4
f(x + 1) = x² - 4
f(x - 1 + 1) = (x - 1)² - 4
f(x) = (x - 1)² - 4
(x - 1)² = y + 4
x - 1 = √(y + 4)
x = 1 + √(y + 4)
f^-1 (x) = 1 + √(x + 4)