Which of the following is a one-to-one function?
Af(x) = {2;0≤x<2 3;2≤x<4 4;4≤x<6
B{4x+1;x<-2 x-5;x≥-2
C[[2x]]
Dx^2
Af(x) = {2;0≤x<2 3;2≤x<4 4;4≤x<6
B{4x+1;x<-2 x-5;x≥-2
C[[2x]]
Dx^2