Determine the validity of the following arguments using truth tables. Which confluence of truth values shows its invalidity? 1. A ⇒B B ⇒A ----------- ∴A ⇒B 2. (E ∨R ) ∧(E ∨T) R ∧T ------------ ∴E 3.
Determine the validity of the following arguments using truth tables. Which confluence of truth values shows its invalidity? 1. A ⇒B B ⇒A ----------- ∴A ⇒B 2. (E ∨R ) ∧(E ∨T) R ∧T ------------ ∴E 3.
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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Determine the validity of the following arguments using truth tables. Which confluence of truth values shows its invalidity?
1.
A ⇒B
B ⇒A
-----------
∴A ⇒B
2.
(E ∨R ) ∧(E ∨T)
R ∧T
------------
∴E
3.
(O ∨P) ⇒J
O ∨¬J
P ∨¬J
O ⇔¬P
-----------
∴J ∧¬J
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