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3 cards from this section. Quick, good the night before a test.
Define satisfiability in your own words.
Think about conditions needed for a proposition to be true.
What is the meaning of a tautology?
Consider an expression that never fails.
What does it mean for a proposition to be satisfiable?
Think of when a statement holds true.
True or False: A tautology is a proposition that can never be true.
Consider the definition of a tautology.
Given the following proposition, determine if it's satisfiable: (p ∨ q) ∧ (¬p ∧ r).
Try different combinations of truth assignments.
Explain how you would convert the compound proposition ¬(p ∧ q) into CNF.
Look for simplifications through negations.
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