Question

Tolong bantu yah kak
Fungsi invers f(x)=1/3x+2 adalah...

Answer 1

F(x) = 1/ 3x + 2
y    = 1/ 3x+2
y(3x+2) = 1
    3x+2 = 1/y
        3x = 1/y - 2
          x = (1-2y / y) / 3
         f⁻¹(x) = 1-2y/3y