diketahui (f bundaran g) (x) = [tex] \frac{2x - 3}{x + 4} [/tex] ; x [tex] \neq [/tex] -4 dan g(x) = 1 - x, maka f(x) = . . . .

jawab

g(x) = 1 - x
g⁻¹(x) = 1- x

f(x) = (fog)o g⁻¹

f(x) = {2(1-x) - 3)]/ {1 - x +4}
f(x)= (2 - x - 3)/(1 - x + 4)
f(x)= (-1 - x ) /(5 - x)

atau

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