Let P (x) and Q(x) be two predicates and suppose D is the the domain of For the statement forms in each pair, determine whether they have the same truth value for every choice of p(x), Q(x) and D, or not. ∀x ∈ D, (P (x) ∧ Q(x)), and (∀x ∈ D, P (x)) ∧ (∀x ∈ D, Q(x)) ∀x ∈ D, (P (x) ∨ Q(x)), and (∀x ∈ D, P (x)) ∨ (∀x ∈ D, Q(x))

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
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Let P (x) and Q(x) be two predicates and suppose D is the the domain of

  1. For the statement forms in each pair, determine whether they have the same truth value for every choice of p(x), Q(x) and D, or not.

x D, (P (x) Q(x)), and (x D, P (x)) (x D, Q(x))

x D, (P (x) Q(x)), and (x D, P (x)) (x D, Q(x))

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