Diketahui:
g(x) = 2x/(x + 5)
Ditanyakan:
g^-1(x)
Penyelesaian:
g(x) = 2x/(x + 5)
y = 2x/(x + 5)
xy + 5y = 2x
2x - xy = 5y
x(2 - y) = 5y
x = 5y/(2 - y)
g^-1(y) = 5y/(2 - y)
g^-1(x) = 5x/(2 - x) ; x ≠ 2
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Sama-sama, kalau mau tau saya butuh jawaban terbaik hhe.