Question: Semantics of propositional logic Show that: I. | | | = = ? P L ( ( P v v Q ) R ) (

Semantics of propositional logic
Show that:
I. |||==?PL((PvvQ)R)(PR)
2.|||==?PL((P??Q)R)((Q??R)P)
4.PvvQ,PR,QR|||==?PLR
5.P(QvvR),Q??RPL
CAN YOU DO 4 and 5 PLEASE, THANKS
Semantics of propositional logic Show that: I. |

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