Math Problem Statement
Let p be the proposition “You get an A on the final exam,” let q be the proposition “You did every exercise
in this book,” and let r be the proposition “You get an A in this class.” Write these propositions using 𝑝𝑝,
𝑞𝑞, and 𝑟𝑟 and logical connectives.
a) You get an A in this class but did not do every exercise in this book.
b) You get an A on the final, do every exercise in this book, and get an A in this class.
c) To get an A in this class, it is necessary for you to get an A on the final.
d) You get an A on the final but did not do every exercise in this book; nevertheless, you get an A in
this class.
e) Getting an A on the final and doing every exercise in this book is sufficient for getting an A in this
class.
Solution
Let's express each of these propositions using the symbols (you get an A on the final exam), (you did every exercise in this book), and (you get an A in this class), along with logical connectives.
a) You get an A in this class but did not do every exercise in this book.
This can be expressed as:
b) You get an A on the final, do every exercise in this book, and get an A in this class.
This can be expressed as:
c) To get an A in this class, it is necessary for you to get an A on the final.
This can be expressed as:
d) You get an A on the final but did not do every exercise in this book; nevertheless, you get an A in this class.
This can be expressed as:
e) Getting an A on the final and doing every exercise in this book is sufficient for getting an A in this class.
This can be expressed as:
Do you want details on any of these logical expressions, or do you have any questions?
Here are five questions that extend these concepts:
- How do we represent the logical expression for "If you did every exercise in the book, then you get an A on the final"?
- What is the contrapositive of the expression ?
- How would you express "Getting an A in this class is sufficient for getting an A on the final and doing every exercise"?
- How can we represent "You did not get an A on the final and did every exercise in this book"?
- What is the converse of the statement ?
Tip: When working with logical connectives, understanding the difference between "necessary" and "sufficient" conditions is crucial for accurate translation into logical expressions.
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Math Problem Analysis
Mathematical Concepts
Propositional Logic
Formulas
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Theorems
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Suitable Grade Level
Advanced High School
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