Math Problem Statement

Indique si cada una de ellas es una fórmula tautológica, contingente o contradictoria. Justifique su respuesta.

a) (pÚq) → ~ (~pÙ~q)  b) (p→q) → ~ (pÙ~q) d) (pÚq) « ~ (pÚq)

Solution

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Math Problem Analysis

Mathematical Concepts

Propositional Logic
Logical Formulas
Tautology
Contradiction
Contingency

Formulas

(p ∨ q) → ¬ (¬p ∧ ¬q)
(p → q) → ¬ (p ∧ ¬q)
(p ∨ q) ↔ ¬ (p ∨ q)

Theorems

Law of Implication
Law of Double Negation
De Morgan's Laws

Suitable Grade Level

Grades 10-12