Fill in the blanks (-----------------) to prove that all these logical equivalences are tautologies . (Note that you can use the laws of equivalence attached at the end of exam paper). (¬ P) ® (P ® Q) --------------------------------- Implication law --------------------------------- Implication law --------------------------------- double negation law --------------------------------- associative law --------------------------------- excluded middle law --------------------------------- --------------------------------- Answer: --------------------------------- Implication law --------------------------------- Implication law --------------------------------- double negation law --------------------------------- associative law --------------------------------- excluded middle law --------------------------------- ---------------------------------
Fill in the blanks (-----------------) to prove that all these logical equivalences are tautologies . (Note that you can use the laws of equivalence attached at the end of exam paper).
(¬ P) ® (P ® Q)
--------------------------------- Implication law
--------------------------------- Implication law
--------------------------------- double negation law
--------------------------------- associative law
--------------------------------- excluded middle law
--------------------------------- ---------------------------------
Answer:
--------------------------------- Implication law
--------------------------------- Implication law
--------------------------------- double negation law
--------------------------------- associative law
--------------------------------- excluded middle law
--------------------------------- ---------------------------------
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