YES or NO? YES iff the correct negation. (A) If A then not(B) Negates to A and B

Question

YES or NO? YES iff the correct negation. (A) If A then not(B) Negates to A and B. (B) ?x?y A(x, y) Negates to ?x?y A(x, y) (C) If B then (If C then D) Negates to B and Not(C) and not(D). (D) ?x?y A(x, y) Negates to ?x?y NOTA(x, y) (E) A iff B Negates to (A and NOT(B)) or (B and NOT(A)) F) ?!x?yB(x, y) Negates to Either ?x?yNOT(B(x, y)) OR ?x, z ?y B(x, y) AND B(z, y) AND x = z (G) ?!x C(x) Negates to ?x notC(x) or ?x, y C(x) and C(y). (H) A implies (B or C) Negates to A and not(C) and not(D). (I) (A or B) and (C or D) Negates to (not(A) and not(B)) or (not(C) and not(D)). (J) (If A then B) iff (If C then D) Negates to (A and not(B) and (If C then D)) or ((If A then B) and C and D).

Explanation / Answer

A) yes B) yes C) no d) yes e) no f) no g) yes h) no i) yes j) yes

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