3
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I need an algebraic solution to show this is a tautology:

$\displaystyle [(p\lor q) \land (p \rightarrow r) \land (q \rightarrow r)] \rightarrow r$.

Thanks

  • 6
    And what do you mean by "algebraic solution"?2011-10-08
  • 1
    Have you tried completing the square? (I jest)2011-10-09

2 Answers 2