Discrete Math Quiz
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LOGIC AND PROOF
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Using a truth table to analyze
(
P
∧
Q
)
↔
(
¬
P
∨
¬
Q
)
(P \land Q) \leftrightarrow (\neg P \lor \neg Q)
(
P
∧
Q
)
↔
(
¬
P
∨
¬
Q
)
, what type of logical expression is this?
A
This expression is a tautology (always true)
B
This expression is logically equivalent to
P
⊕
Q
P \oplus Q
P
⊕
Q
C
This expression is satisfiable but not a tautology
D
This expression is a contradiction (always false)
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