Q7 Let A = [(p → q) ^(~p → ~q)]. Construct a truth table for A and determine if it is a tautology, contradiction or contingency. Truth table can be constructed as below. a) pq]~p]~g p → q b~e d~ [(p → q) ^ (~p → ~q)] 1 1 1 1 b) Obtain the Principal Disjunctive Normal Form (PDNF) and Principal Conjunctive Normal Form (PCNF) of A and ~A by using the truth table in question 7a).

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Do question b) only. 

Q7
Let A = [(p → q) ^ (~p → ~q)].
Construct a truth table for A and determine if it is a tautology, contradiction or
contingency. Truth table can be constructed as below.
a)
b~→ d~
[(p → q) ^ (~p + ~q)]
1
1
1
1
b)
Obtain the Principal Disjunctive Normal Form (PDNF) and Principal Conjunctive
Normal Form (PCNF) of A and ~A by using the truth table in question 7a).
Transcribed Image Text:Q7 Let A = [(p → q) ^ (~p → ~q)]. Construct a truth table for A and determine if it is a tautology, contradiction or contingency. Truth table can be constructed as below. a) b~→ d~ [(p → q) ^ (~p + ~q)] 1 1 1 1 b) Obtain the Principal Disjunctive Normal Form (PDNF) and Principal Conjunctive Normal Form (PCNF) of A and ~A by using the truth table in question 7a).
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