What is the rule of inference used in the following: If I work all night on this homework, then I can answer all the exercises. If I answer all the exercises, I will understand the material. Therefore, if I work all night on this homework, then I will understand the material.
What is the rule of inference used in the following: If I work all night on this homework, then I can answer all the exercises. If I answer all the exercises, I will understand the material. Therefore, if I work all night on this homework, then I will understand the material.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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132-10

Transcribed Image Text:**Problem 10 (Rules of Inference)**
What is the rule of inference used in the following:
If I work all night on this homework, then I can answer all the exercises. If I answer all the exercises, I will understand the material. Therefore, if I work all night on this homework, then I will understand the material.
This example illustrates the use of the rule of inference known as *hypothetical syllogism*. In logical terms, hypothetical syllogism is a valid argument form which states:
If \( p \rightarrow q \) and \( q \rightarrow r \), then \( p \rightarrow r \).
In this problem:
- \( p \) represents "I work all night on this homework."
- \( q \) represents "I can answer all the exercises."
- \( r \) represents "I will understand the material."
Using hypothetical syllogism, we conclude that if the first condition is met, the final outcome will also be achieved.
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