Jawabanmu

2014-02-23T20:42:12+07:00
F(x) = 2x-5/-x+4
y = 2x-5/-x+4
-xy+4y = 2x-5
-xy-2x = -4y-5
x(y+2)=4y+5
x=4y+5/y+2
f^-1(x)=4x+5/x+2