invers dari fungsi f(x)=3x-2 per 5x+8, x tidak sama dengan -8 per 5

y = 3x-2 / 5x+8
y(5x+8)= 3x-2
5xy + 8y = 3x-2
5xy - 3x = -8y - 2
x(5y-3)= -8y-2
x = -8y-2 / 5y-3
f-¹(x) = -8x-2 / 5x-3

Bab Fungsi
Matematika SMA Kelas XI

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

f(x) = (3x - 2) / (5x + 8)
f^-1 (x) = (-8x - 2) / (5x - 3)