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November 22nd, 2010, 08:40 PM   #1
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Predicate Logic translation. >_<

This is part of some homework I have to do, you don't have to answer both any help would be appreciated


1.Translate the following into predicate logic. Write each sentence as a premise with the conclusion being the last sentence. Stack them vertically, as you would for a refutation tree.
All who like stuffing like turkey. Not all who like turkey like gravy. Therefore, there is someone who likes stuffing but doesn’t like gravy.
*I know that each will have 3 quantifiers and 3 variables but I just can't get it.


2.Translate the following argument and use a refutation tree to show that it is valid.
Mo eats turkey only if everyone eats turkey. So if someone doesn’t eat turkey, then Mo doesn’t either.

I got ?x((Tx & Emx) ? ?yEyx) for the first part, but I SUCK at refutation trees, my brain just won't think that way.
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