Negations - Logic
Negations
Lessons
Notes:
The negation of a statement is the opposite of a statement. We denote it with either "not" or the symbol ~. The negation gives the opposite of the truth value. For example,
: A square is a rectangle
~ : A square is not a rectangle
is true, so ~ is false.
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a)
Definition of Negations and Examples
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1.
Negation of the Statement
Write the negation of each statement:
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2.
Truth Value of a Negation
Write the negation of each statement, and determine the truth value:
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4.
Double Negation
Determine the truth value of the statement. Negate it twice, write it in a complete sentence, and determine the new truth value:
