Using only the rules of SD, derive the following rules of
SD+:
a) Disjunctive Syllogism (one case)...
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Using only the rules of SD, derive the following rules ofSD+:
a) Disjunctive Syllogism (one case) :
P v Q ~P
b) Commutation: (wedge only) :
P v Q <--> Q v P
c) Implication :
P ? Q <--> Q ? ~P
d) Double Negation
P <--> ~~P
e) DeMorgan
(~(P & Q) <--> ~P v ~Q only)
Use SL sentences rather than metavariables in your derivations.Each direction of replacement rules must be shown (that is, you areproving "equivalence in SD" in these cases)
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