Question: Language, Logic, and Proof Chapter 13 Exercise 13.15 For each of the following arguments, decide whether or not it is valid. If it is, use

Language, Logic, and Proof Chapter 13 Exercise 13.15

For each of the following arguments, decide whether or not it is valid. If it is, use Fitch to give a formal proof. If it isnt, use Tarskis World to give a counterexample. Remember that in this chapter you are free to use Taut Con to justify proof steps involving only propositional connectives.

Language, Logic, and Proof Chapter 13 Exercise 13.15 For each of the

13.15 Ex (Cube(x) Small (x)) Vx Cube(x) Small (x)

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