Alexis O.

asked • 08/02/15

Natural Deduction in Propositional Logic Help?

Use the first four rules of inference to derive the conclusions of the following symbolized arguments. (please please help. And explanation would be nice too!)

(1) 1. ~C>(A>C)
2. ~C /~A



(2.) 1. F v (D>T)
2.~F
3. D /T

(3.) 1. (K & B) v (L>E)
2. ~(K&B)
3. ~E /~L


(4.) 1. J > (K>L)
2. L v J
3. ~L /~K

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