Proofs

  • MHB
  • Thread starter sxc
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  • #1
sxc
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Please help with these 2 questions.
1621418776280.png
 

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  • #2
Evgeny.Makarov
Gold Member
MHB
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What exactly is not clear to you?
 
  • #3
HOI
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For 5, we have "-R" so R is false. That means, since we also have "-QvR" that Q must be false. We also have "P" so P is true and then "Qv-P" means that Q must be true.
 
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