Let P(x), Q(x), and R(x) be the statements “x is a clear explanation,” “x is satisfactory,” and “x is an excuse,” respectively. Suppose that the domain for x consists of all English text. Express each of these statements using quantifiers,
Question
Let P(x), Q(x), and R(x) be the statements “x is a clear explanation,” “x is satisfactory,” and “x is an excuse,” respectively. Suppose that the domain for x consists of all English text. Express each of these statements using quantifiers,
Solution
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"For all x, P(x)" can be expressed as "Every English text is a clear explanation."
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"For all x, Q(x)" can be expressed as "Every English text is satisfactory."
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"For all x, R(x)" can be expressed as "Every English text is an excuse."
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"There exists an x such that P(x)" can be expressed as "There is an English text that is a clear explanation."
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"There exists an x such that Q(x)" can be expressed as "There is an English text that is satisfactory."
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"There exists an x such that R(x)" can be expressed as "There is an English text that is an excuse."
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"For all x, P(x) and Q(x)" can be expressed as "Every English text is a clear explanation and is satisfactory."
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"For all x, P(x) and R(x)" can be expressed as "Every English text is a clear explanation and is an excuse."
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"For all x, Q(x) and R(x)" can be expressed as "Every English text is satisfactory and is an excuse."
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"There exists an x such that P(x) and Q(x)" can be expressed as "There is an English text that is a clear explanation and is satisfactory."
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"There exists an x such that P(x) and R(x)" can be expressed as "There is an English text that is a clear explanation and is an excuse."
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"There exists an x such that Q(x) and R(x)" can be expressed as "There is an English text that is satisfactory and is an excuse."
Similar Questions
Let 𝑃(𝑥, 𝑦) be the statement “𝑥 enjoys playing 𝑦,” where the domain for𝑥 consists of all Ashesi students and that of 𝑦 consists of all sports.Express each of these statements by a simple English sentence.a) 𝑃(Paul, football)b) ∃𝑦𝑃(Carol, 𝑦)c) ∃𝑥(𝑃(𝑥, basketball) ∧ 𝑃(𝑥, badminton))d) ∃𝑥∀𝑦((𝑥 ≠Ben) ∧ (𝑃(Ben, 𝑦) → 𝑃(𝑥, 𝑦))
Universal Quantifier
Let 𝐶(𝑥, 𝑦) mean that student 𝑥 is enrolled in class 𝑦, where the domain for 𝑥 consists of all students inyour school and the domain for 𝑦 consists of all classes being given at your school. Express each of thesestatements by a simple English sentence.a) 𝐶(𝑅𝑎𝑛𝑑𝑦 𝐺𝑜𝑙𝑑𝑏𝑒𝑟𝑔, 𝐶𝑆 252)b) ∃𝑥𝐶(𝑥, 𝑀𝑎𝑡ℎ 695)c) ∃𝑦𝐶(𝐶𝑎𝑟𝑜𝑙 𝑆𝑖𝑡𝑒𝑎, 𝑦)d) ∃𝑥(𝐶(𝑥, 𝑀𝑎𝑡ℎ 222) ∧ 𝐶(𝑥, 𝐶𝑆 252))e) ∃𝑥∃𝑦∀𝑧((𝑥 ≠ 𝑦) ∧ (𝐶(𝑥, 𝑧) → 𝐶(𝑦, 𝑧)))f) ∃𝑥∃𝑦∀𝑧((𝑥 ≠ 𝑦) ∧ (𝐶(𝑥, 𝑧) ↔ 𝐶(𝑦, 𝑧)))
Let 𝐼(𝑥) be the statement “𝑥 has an Internet connection” and 𝐶(𝑥, 𝑦) be the statement “𝑥 and 𝑦 havechatted over the Internet,” where the domain for the variables 𝑥 and 𝑦 consists of all students in yourclass. Use quantifiers to express each of these statements.a) Jerry does not have an Internet connection.b) Rachel has not chatted over the Internet with Chelsea.c) No one in the class has chatted with Bob.d) Sanjay has chatted with everyone except Joseph.e) Someone in your class does not have an Internet connection.f) Not everyone in your class has an Internet connection.g) Exactly one student in your class has an Internet connection.h) Everyone in your class with an Internet connection has chatted over the Internet with at leastone other student in your class.i) Someone in your class has an Internet connection but has not chatted with anyone else in yourclass.j) There are two students in your class who have not chatted with each other over the Internet.k) There is a student in your class who has chatted with everyone in your class over the Interne
Translate the following statements into logical expressions using predicates, quantifiers, and logical connectives. Predicates: C(x): x is a CSE student L(x): x loves music The universe of discourse for the variable x is all students. a. Every student loves music b. No student loves music c. Some students love music d. Every CSE student loves music e. Some CSE students love music
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