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Unformatted text preview: All good students study hard. No students in mathematics are unable to use a computer. x y x = y 2 9. Prove or disprove the claim that the compound proposition x P ( x ) x Q ( x ) is logically equivalent to x ( P ( x ) Q ( x )) 10. Section 1.3, exercise 62 11. Prove or disprove the claim that the proposition x ( P ( x ) Q ( x )) is logically equivalent to x P ( x ) x Q ( x ) (more on next page) 12. Section 1.4, exercise 8 13. Determine the truth value of x y ( x y 2 ) when the universe of discourse is the (a) Positive reals (b) Non-negative reals (c) Positive integers (d) Non-negative integers 14. Section 1.4, exercise 52 Please write how many hours (to the nearest quarter-hour) it took you to complete this as-signment near where you write your name on the rst page....
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- Winter '08