My textbook says that the duality principle of the boolean algebra allows me to obtain a same expression in a different form. So for example, X.Y+Z' = (X'+Y').Z
But when I try to plot the truth table, the values of X.Y+Z' is opposite of (X'+Y').Z, which is if one of it is true, the other is false and vice versa. Since this is the case, they are not the same right? Then why are they still considered equal?
But when I try to plot the truth table, the values of X.Y+Z' is opposite of (X'+Y').Z, which is if one of it is true, the other is false and vice versa. Since this is the case, they are not the same right? Then why are they still considered equal?