///
Considere as tabelas-verdade I, II e III a seguir:
| p | q | p ᴧ q | ~(pᴠq) | ~p | ~q | ~p ᴠ ~q | ~(pᴧq)⇔(~p ᴠ ~q) |
|---|---|---|---|---|---|---|---|
| V | V | V | F | F | F | F | V |
| V | F | F | V | F | V | V | V |
| F | V | F | V | V | F | V | V |
| F | F | F | V | V | V | V | V |
| p | q | ~p | ~q | p ᴧ ~q | ~p ᴠ q | (p ᴧ ~q)⇔( ~p v q) |
|---|---|---|---|---|---|---|
| V | V | F | F | V | F | F |
| V | F | F | V | V | F | F |
| F | V | V | F | F | V | F |
| F | F | V | V | V | F | F |
| p | q | p v q | p ᴠ q⇔p |
|---|---|---|---|
| V | V | V | V |
| V | F | V | V |
| F | V | F | F |
| F | F | V | V |
É CORRETO afirmar que: