16.3. Negative Statements http://www.ck12.org
A different way to think about this shaded region is to consider that it represents everything that isn’t inPor isn’t in
Q.
∼(P∧Q)⇔∼P∨∼Q
This is a second representation of De Morgan’s Law.
Example C
Use set theory circles to interpret the negation of a conditional statement and explain how the negation of a condi-
tional can be written in a different way.
Solution:The shaded portion in the box represents the area that makes the following statement true.