Textbook: https://www.google.com/search?tbo=p&tbm=bks&q=isbn:0495391328

Textbook: http://fit.ac.ir/en/download/ebooksclub.org__Discrete_Mathematics_with_Applications.pdf (4th ed.)

Part (b) of exercise 23 on page 366 of the textbook (chapter 6.2):

(b). Illustrate the other distributive law by shading in the region corresponding to A (B C) on one copy of the diagram and (A B) (A C) on another.

Question: Also, disprove the following using the

same method: A (B C) = (A B) (A C), where the symmetric dierence operation

is dened for any two sets X and Y as X Y = (X Y ) (Y X). In fact, one of these two

sets is a subset of the other. State the correct relationship based on the Venn diagrams.