Question

Jika f(x+2)=x-2 maka f-^(x) adalah
x+4

Answer 1

F(x + 2) = ((x + 2) - 4)/((x + 2) + 2)
f(x) = (x - 4)/(x + 2)
y = (x - 4)/(x + 2)
xy + 2y = x - 4
xy - x = -2y - 4
x(y - 1) = -2y - 4
x = (-2y - 4)/(y - 1)
f^-1 (x) = (-2x - 4)/(x - 1) dgn syarat x ≠ 1

semoga membantu :')