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Philosophy 100 problems help!

Forums: Logic
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amatista10
 
Reply Mon 9 May, 2011 01:58 am
USE PROOFS Smile
1. ~R = ~T -> (R . S)
2. C. (~B v A), ~C v B, (A . C) -> ~~D = D
3. L v ~R, ~R -> O, ~L, O -> (T -> L) = ~T

ANSWER KEY: ~ IS NOT
-> IS IF AND THEN
. IS AND
= CONCLUSION
v IS OR
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jespah
 
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Reply Mon 9 May, 2011 07:04 am
@amatista10,
Gadzooks that terminology is confusing.

Isn't ~~D always = D? That would be a tautology.
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