This question is from the book Abstract Algebra: Theory and Applications by Thomas W. Judson.
Chapter 1 – Question 10
Prove $A \cup B = (A \cap B) \cup (A \setminus B) \cup (B \setminus A)$.
This question is from the book Abstract Algebra: Theory and Applications by Thomas W. Judson.
Prove $A \cup B = (A \cap B) \cup (A \setminus B) \cup (B \setminus A)$.