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Chapter 1 Part IV Using Truth tables & Part V Tautologies and Contradictions

Chapter 1 Part IV Using Truth tables & Part V Tautologies and Contradictions. Make the truth table ~ ( p  q) ^ ~p. Now to tautologies & contradictions. More Definitions. A statement is a tautology if it is always true A statement is a contradiction if it is always false.

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Chapter 1 Part IV Using Truth tables & Part V Tautologies and Contradictions

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  1. Chapter 1Part IV Using Truth tables&Part V Tautologies and Contradictions

  2. Make the truth table ~ ( p  q) ^ ~p

  3. Now to tautologies & contradictions

  4. More Definitions • A statement is a tautology if it is always true • A statement is a contradiction if it is always false

  5. Check the following p v ~ p q ^ ~ q

  6. Check these p  ~ p [(pq) ^ p]  q

  7. Some More • [(p  q) ^ ~ q]  ~p • [(p  q) ^ ~ p]  ~q

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