Solutions19

# Solutions19 - Chapter 19 Hints and Selected Solutions...

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Chapter 19: Hints and Selected Solutions Section 19.2 (page 531) 19.1 1. c Larger ( a , x ) has date of birth = 1. This constant is also called c 1 later in the exercise. 2. c Larger ( c 1 , x ) has date of birth = 2. This constant is also called c 2 later in the exercise. Section 19.3 (page 533) 19.2 1. xLarger ( a , x ) Larger ( a , c Larger ( a , x ) ) 2. xLarger ( c 1 , x ) Larger ( a , c Larger ( c 1 , x ) ) 19.4 1. The truth functional form of the argument is A B C D C Clearly C is not a tautological consequence of the premises. 19.5 1. Hint: The crucial fact for this one is that the sentence ( Cube ( a ) Small ( sa )) → ∃ x ( Cube ( x ) Small ( x )) is a sentence of H . 19.6 1. xCube ( x ) Cube ( c ) is of type H1. 4. ¬ ( Cube ( c ) Small ( c )) → ∃ x ¬ ( Cube ( x ) Small ( x )) is of type H2. 1

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19.10 19.11 Hint: Use your answer to Exercise 6.33 and break into cases. 2
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## This note was uploaded on 03/25/2009 for the course LOGIC 20034 taught by Professor Dhoe during the Spring '09 term at Hanover.

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Solutions19 - Chapter 19 Hints and Selected Solutions...

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