Example: air traffic controller
Methods of proof
Methods of proof Section 1.6 & 1.7 MSU/CSE 260 Fall 2009 2 Proof Methods Direct Direct Contrapositive Contradiction pc p→c ¬ p ∨c ¬ c →¬ pp ∧¬ c TT T T T F T F F F F T FT T T T F FF T T T F MSU/CSE 260 Fall 2009 3 How are these questions related? 1. Does p logically imply c ? 2. Is the proposition (p →c) a tautology? 3.
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