Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Transcribed Image Text:### Determining the Validity of a Symbolic Argument Using a Truth Table
In logic, a crucial skill is determining whether an argument is valid or invalid. One way to do this is by using a truth table. Examine the following argument and determine its validity:
#### Argument:
1. \( p \rightarrow q \)
2. \( q \rightarrow p \)
3. \( \therefore p \vee q \)
#### Question:
Choose the correct answer below:
- O The argument is invalid.
- O The argument is valid.
Click to select your answer.
### Explanation:
1. **Symbols Explanation**:
- \( p \rightarrow q \): If \( p \), then \( q \).
- \( q \rightarrow p \): If \( q \), then \( p \).
- \( \therefore p \vee q \): Therefore, \( p \) or \( q \).
2. **Building a Truth Table**:
To determine the validity, let's create a truth table for these statements. A truth table lists all possible truth values for the propositions \( p \) and \( q \) and determines the truth values of the compound statements.
| \( p \) | \( q \) | \( p \rightarrow q \) | \( q \rightarrow p \) | \( p \vee q \) | Both premises true? | Conclusion true if premises true? |
|:------:|:------:|:--------------------:|:--------------------:|:-------------:|:------------------:|:------------------------------:|
| T | T | T | T | T | True | True |
| T | F | F | T | T | False | True |
| F | T | T | F | T | False | True |
| F | F | T | T | F | True | False |
3. **Analysis**:
- When both \( p \) and \( q \) are true (first row), \( p \rightarrow q \) is true, \( q \rightarrow p \) is true, and \( p \vee q \) is true. Both the
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