Choose the formula in which TWO instances of the variable "x" are free: a) ((∀x)Gx -> (Fx -> Hx)) b) ((Fx ᐱ Gx) -> Hx) c) ((Ǝx)(Fx ᐱ Gx) -> Hx) d) (∀x)(Fx -> Gx)
Choose the formula in which TWO instances of the variable "x" are free: a) ((∀x)Gx -> (Fx -> Hx)) b) ((Fx ᐱ Gx) -> Hx) c) ((Ǝx)(Fx ᐱ Gx) -> Hx) d) (∀x)(Fx -> Gx)
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter1: Solving Linear Equations
Section: Chapter Questions
Problem 3CA
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Question
Choose the formula in which TWO instances of the variable "x" are free:
a) ((∀x)Gx -> (Fx -> Hx))
b) ((Fx ᐱ Gx) -> Hx)
c) ((Ǝx)(Fx ᐱ Gx) -> Hx)
d) (∀x)(Fx -> Gx)
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