fungsi invers f(x) =1/x berapa ? mohon caranya

f(x) = 1/x
y = 1/x
xy = 1
x = 1/y

f`¹(x) = 1/x

Semoga berguna +_+

Bentuk Pecahan
f(x) = (ax + b)/(cx + d)
f¯¹(x) = (dx - b)(-cx + a)

Maka...
f(x) = 1/x
f¯¹(x) = (0x - 1)/(-x + 0)
f¯¹(x) = -1/-x
f¯¹(x) = 1/x