Tolong dengan cara lengkapnya yaaa..

F(x) = 4x+1/ x-4
y(x-4) = 4x+1
xy-4y = 4x+1
xy-4x = 4y+1
x(y-4) = 4y+1

f-¹(x) = 4x + 1/ x – 4

Y = (4x + 1) / (x – 4)
4x + 1 = xy – 4y
4y + 1 = xy – 4x
4y + 1 = x (y – 4)
x = (4y + 1) / (y – 4)

Invers f(x)
= (4x + 1) / (x – 4)