Question: not ( A B ) ( A ? ? notB ) Problem 7 Give a formal proof of the following theorem. PS 3 . 7

not(AB)(A??notB)
Problem 7
Give a formal proof of the following theorem.
PS3.7
T|--((AC)??(BC))((AvvB)C)|
not(AB)(A??notB) Problem 7 Give a formal proof of the following theorem.

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