Math Problem Statement
π and π are propositions. i. Construct a truth table to show the truth values of ~π β π and πΛ π ii. State, with a reason, if ~π β π and πΛ π are logically equivalent.
Solution
Let's go through the steps to solve this problem.
i. Constructing a truth table for and :
We have two propositions, and , each of which can take the values True (T) or False (F). Let's first define the logical operations involved:
- Negation (): This is True when is False and False when is True.
- Implication (): For , this is False only when the antecedent () is True and the consequent () is False. In all other cases, it's True.
- Disjunction (): For , this is True if at least one of or is True, and False if both are False.
Now, let's construct the truth table.
T | T | F | T | T |
T | F | F | T | T |
F | T | T | T | T |
F | F | T | F | F |
ii. Determining if and are logically equivalent:
Two propositions are logically equivalent if they have the same truth values for all possible truth values of and .
From the truth table, we can observe that the truth values of and are the same for all combinations of and . Therefore, we conclude that:
Reason: Both propositions result in the same truth values for all possible combinations of truth values of and , which confirms their logical equivalence.
Would you like further details on any part of the explanation or have any questions?
Here are 5 related questions to deepen your understanding:
- How would the truth table look for the proposition ?
- What is the truth value of when both and are False?
- Can two propositions be logically equivalent if their truth values differ in only one case?
- How does the truth table for compare to that of ?
- What logical law can be used to justify the equivalence of and ?
Tip: When constructing truth tables, it's helpful to break complex expressions into smaller parts, evaluating each step independently before combining results.
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Math Problem Analysis
Mathematical Concepts
Logic
Propositional Logic
Truth Tables
Logical Equivalence
Formulas
Negation (~p)
Implication (~p β q)
Disjunction (pΛ
q)
Theorems
Logical Equivalence Theorem
Suitable Grade Level
Grades 9-12
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