Let f:0,1² → 0,1 be the following binary boolean function: x y f(x,y) 0 0 1 0 1 0 1 0 0 1 1 0 Which of the following binary boolean functions are the same as g(x,y) = (x y)?
1) f(x,y) = x + y
2) f(x,y) = x * y
3) f(x,y) = x + y + 1
4) f(x,y) = x * y + 1