Math Problem Statement

Complete the truth table for the expression: ((p ↔ q) ∧ ¬q) → ¬p.

Solution

Let's break down the truth table and complete it step-by-step for the expression:

((pq)¬q)¬p((p \leftrightarrow q) \land \neg q) \rightarrow \neg p

We'll evaluate the components in a systematic way.

Step 1: Recall the columns of the truth table provided.

  1. pp and qq: These represent the truth values of the variables pp and qq.
  2. ¬q\neg q and ¬p\neg p: These are the negations of qq and pp, respectively.
  3. pqp \leftrightarrow q: The biconditional statement, which is true if both pp and qq have the same truth values, and false otherwise.
  4. (pq)¬q(p \leftrightarrow q) \land \neg q: The conjunction of the biconditional and the negation of qq.
  5. The final expression: ((pq)¬q)¬p((p \leftrightarrow q) \land \neg q) \rightarrow \neg p.

Step 2: Truth Table Structure

We will go row by row and calculate each of these components for the four possible truth value combinations of pp and qq.

ppqq¬q\neg q¬p\neg ppqp \leftrightarrow q(pq)¬q(p \leftrightarrow q) \land \neg q((pq)¬q)¬p((p \leftrightarrow q) \land \neg q) \rightarrow \neg p
TTFFTFT
TFTFFFT
FTFTFFT
FFTTTTT

Step 3: Explanation

  • Biconditional pqp \leftrightarrow q:
    • True only when pp and qq are both true or both false.
  • Conjunction (pq)¬q(p \leftrightarrow q) \land \neg q:
    • True only if the biconditional is true and ¬q\neg q is also true.
  • Implication ((pq)¬q)¬p((p \leftrightarrow q) \land \neg q) \rightarrow \neg p:
    • The implication is true except in the case where the premise is true and the conclusion is false.

Thus, all rows evaluate to true for the final expression.

Would you like more details on any of these steps or have further questions? Here are 5 related questions to expand on this topic:

  1. How do truth tables help in understanding logical expressions?
  2. What is the difference between conjunction and biconditional operations?
  3. How does the truth value of an implication change based on its components?
  4. What happens if you change the order of operations in a logical expression?
  5. How can you use a truth table to determine if a logical expression is a tautology?

Tip: When dealing with implications, remember that the statement is only false when the premise is true and the conclusion is false.

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Math Problem Analysis

Mathematical Concepts

Propositional Logic
Truth Tables
Logical Operators

Formulas

p ↔ q (Biconditional)
¬p (Negation)
p ∧ q (Conjunction)
p → q (Implication)

Theorems

Logical Equivalence
Implication Truth Table

Suitable Grade Level

Undergraduate