jika F(x) = 2x-1/x+2 maka f-1 (1/x)=

f(x) = 2x-1 / x+2
y = 2x-1 / x+2
2y-y = 2x-1
y = 2x-1
2x = y + 1
x = y + 1 / 2
f^-1(x) = x+1 / 2.

f^-1 (1/x) = 1/x + 1 / 2
= 1/x . 1/2 + 1/2
= 1/2x + 1/2

Semoga membantu;)