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2. Chapter 1, End of Chapter Problems, Section I, Exercise 1b. In this problem, the universe is the set of all integers, P(x) is the statement "it is a positive and" 80:) is the statement "it is a perfect square". Use quantiers and logical connectives to symbolize the following: Some perfect squares are positive but not all perfect squares are positive. 3. Chapter 1, End of Chapter Problems, Section I, Exercise 3. Consider the following proposition: (3x)([P(x) A can :5 [~R(x)]) . Give a denial of the proposition that does NOT use ~ in your nal answer. (Y on may use our properties from the book and 'om class.) 4. Chapter 1, End of Chapter Problems, Section I, Exercise 4a. Determine if the following statement is TRUE or FALSE: (VxXElszXo' = 2y) . The universe for each variable is the set of real numbers. (As always, be sure to justify your answer.)