6.8.28 Set Theory

Condition: for a given theoretical and many identity: a) to illustrate the identity of the Euler-Wenn diagram; b) check the identity by equivalent transformations and the method of characteristic functions. \ [(A \ cup b) \ triangle (a \ cup c) = \ bar {a} \ cap ((b \ cap \ bar {c}) \ cup (\ bar {b} \ cap c)) \ text {. } \]