1): Select the law which shows that the two propositions are logically equivalent. ¬((w∨p)∧(¬q∧¬w)) ¬(w∨p)∨¬(¬q∧¬w) A): DeMorgan’s law B): Distributive law C): Associative law D): Complement law 2): Select the proposition that is a tautology.
1): Select the law which shows that the two propositions are logically equivalent. ¬((w∨p)∧(¬q∧¬w)) ¬(w∨p)∨¬(¬q∧¬w) A): DeMorgan’s law B): Distributive law C): Associative law D): Complement law 2): Select the proposition that is a tautology.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
1): Select the law which shows that the two propositions are logically equivalent.
¬((w∨p)∧(¬q∧¬w))
¬(w∨p)∨¬(¬q∧¬w)
A): DeMorgan’s law
B): Distributive law
C): Associative law
D): Complement law
2): Select the proposition that is a tautology.
- (p∧q)→¬p
- (p∨q)→p
- (p∧q)↔p
4 . (p∧q)→p
A): 4
B): 1
C): 2
D): 3
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