Math Problem Statement

Construct truth tables for the following statements: i.(p →~p) ∨(p→q):

Solution

Let's construct the truth table for the logical statement:

(p → ¬p) ∨ (p → q)

Steps:

  1. Break the statement into components:
    • pp
    • ¬p\neg p (negation of pp)
    • p¬pp \rightarrow \neg p (implication)
    • pqp \rightarrow q (implication)
    • (p¬p)(pq)(p \rightarrow \neg p) \lor (p \rightarrow q) (disjunction)

Truth table:

ppqq¬p\neg pp¬pp \rightarrow \neg ppqp \rightarrow q(p¬p)(pq)(p \rightarrow \neg p) \lor (p \rightarrow q)
TTFFTT
TFFFFF
FTTTTT
FFTTTT

Explanation:

  1. p¬pp \rightarrow \neg p: This is true only when pp is false, as a true proposition cannot imply its own negation.
  2. pqp \rightarrow q: This is true when either pp is false, or when both pp and qq are true.
  3. (p¬p)(pq)(p \rightarrow \neg p) \lor (p \rightarrow q): The disjunction of these two implications is true whenever at least one of the implications is true.

Result:

The truth table shows that the overall statement (p¬p)(pq)(p \rightarrow \neg p) \lor (p \rightarrow q) is only false when p=Tp = T and q=Fq = F.


Do you want further clarification or details on any step?

Here are five related questions:

  1. What is the truth table for ¬(pq)\neg(p \lor q)?
  2. How does the truth table change if we swap ¬p\neg p with ¬q\neg q?
  3. How do we construct a truth table for three variables, like pp, qq, and rr?
  4. Can you construct a truth table for p(qp)p \rightarrow (q \rightarrow p)?
  5. What is the difference between implication and bi-conditional statements?

Tip: In logical implications, pqp \rightarrow q is always true if pp is false, regardless of qq.

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Math Problem Analysis

Mathematical Concepts

Propositional Logic
Truth Tables
Logical Implication
Negation
Disjunction

Formulas

p → q (Implication: False only when p is True and q is False)
¬p (Negation of p)
p ∨ q (Disjunction: True if at least one of p or q is True)

Theorems

Truth table rules for implication: p → q is false only when p is true and q is false.
Disjunction (p ∨ q) is true if at least one of p or q is true.

Suitable Grade Level

Grades 9-12