The symmetric difference of a and b, write AeB is the set of all elements that are in A or B. but are not in both A and B. i.e AGB=(A∪B)(A∩B)。 (A∪B)-(A∩B)=(A-B)U(B-A) A⊕BThe symmetric difference of A and B, write AB, is the set of all elements that are in A or B, but are not in both A and B, i.e. AB=(A∪B)-(A∩B) 。 (A∪B)-(A∩B)=(A-B)∪(B-A)