Prove the invalidity of the following: (P): (x)(Sx-Tx) (P): (x) (TxUx) :. (3x) (Ux. - Sx)
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Prove the invalidity of the following:
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(P₁): (x)(Sx-Tx) (P₂): (x) (TxUx) :. (3x) (Ux. - Sx)
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Related Book For
Introduction To Logic
ISBN: 9781138500860
15th Edition
Authors: Irving M. Copi, Carl Cohen, Victor Rodych
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