Dik:fungsi f yg ditentukan oleh f(x) 3x-2/x-1dan hasil f -¹

gunakan rumus
f(x) = ax+b / cx+d

f invers = -dx +b / cx -a

f invers = 1x-2 / x-3= x-2 / x-3

f(x) = y = (3x - 2)/(x - 1)
y(x - 1) = 3x - 2
xy - y = 3x - 2
xy - 3x = y - 2
x(y - 3) = y - 2
x = f^-1 (y) = (y - 2)/(y - 3)

f^-1 (x) = (x - 2)/(x - 3)