Math Problem Statement

Let P: (¬(p ∧ q) ⇒ p) and Q: (¬p ∨ ¬q) ⇒ p. Which of the following statement is correct about P and Q? 1) P and Q are equivalent. 2) P and Q are not equivalent.

Solution

The question asks to determine whether the two logical statements PP and QQ are equivalent. Let us carefully analyze the problem.

Statements:

  1. P:(¬(pq))    pP: (\neg (p \land q)) \implies p
  2. Q:(¬p¬q)    pQ: (\neg p \lor \neg q) \implies p

Step-by-Step Solution:

Step 1: Rewrite PP

The statement P:(¬(pq))    pP: (\neg (p \land q)) \implies p:

  • ¬(pq)\neg (p \land q) can be rewritten using De Morgan's law as ¬p¬q\neg p \lor \neg q.
  • Thus, PP simplifies to: (¬p¬q)    p(\neg p \lor \neg q) \implies p

Step 2: Compare PP and QQ

The rewritten form of PP is identical to the given QQ: Q:(¬p¬q)    pQ: (\neg p \lor \neg q) \implies p Since both PP and QQ are the same expression, they are logically equivalent.

Final Answer:

P and Q are equivalent.


Do you want further clarification or details on this explanation?

Here are 5 related questions to explore further:

  1. What are De Morgan's laws, and how are they used in simplifying logical statements?
  2. How do you prove logical equivalence step by step using truth tables?
  3. What does the logical implication operator (    \implies) mean, and how can it be rewritten?
  4. Can you give examples of logical statements that are not equivalent and explain why?
  5. How does simplification of compound logical expressions help in problem-solving?

Tip: Always try rewriting logical statements in simpler forms (using laws like De Morgan's) before making comparisons!

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Math Problem Analysis

Mathematical Concepts

Logical Equivalence
Propositional Logic
De Morgan's Laws

Formulas

De Morgan's Laws: ¬(A ∧ B) ≡ ¬A ∨ ¬B

Theorems

Logical Equivalence Theorem

Suitable Grade Level

Undergraduate (Logic or Discrete Mathematics)