
Database Systems 6th Edition by Ramez Elmasri, Shamkant B. Navathe
Edition 6ISBN: 0136086209
Database Systems 6th Edition by Ramez Elmasri, Shamkant B. Navathe
Edition 6ISBN: 0136086209 Exercise 11
State whether the following conclusion are true or false:
A)NOT (P(x) OR Q(x)) ⇒ (NOT (P(x)) AND (NOT (Q(x)))
B)NOT (∃ x) (P(x)) ⇒ ∀ x (NOT (P(x))
C) (∃ x) (P(x)) ⇒ ∀ x ((P(x))
A)NOT (P(x) OR Q(x)) ⇒ (NOT (P(x)) AND (NOT (Q(x)))
B)NOT (∃ x) (P(x)) ⇒ ∀ x (NOT (P(x))
C) (∃ x) (P(x)) ⇒ ∀ x ((P(x))
Explanation
A)True
B)T...
Database Systems 6th Edition by Ramez Elmasri, Shamkant B. Navathe
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