Assignment 2 – Questions 1. Negate the expression ∃ x ∀ y, ( P ( x ) OR Q ( y )) and simplify your answer. 2. For each of the following statements, determine whether it is true when the universe of discourse is Z and whether it is true when the universe of discourse is R . (a) ∀ x ∃ y ( x = y 3 ) (b) ∀ x ∃ y ( y < x AND ∀ z ( z < x
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This note was uploaded on 03/01/2011 for the course MATH 135 taught by Professor Dd during the Spring '11 term at University of Toronto.