Question:Prove that: NOT (A AND B) = NOT A OR NOT B
Answer
| A | B | A AND B | NOT (A AND B) | NOT A | NOT B | NOT A OR NOT B |
|---|---|---|---|---|---|---|
| F | F | F | T | T | T | T |
| F | T | F | T | T | F | T |
| T | F | F | T | F | T | T |
| T | T | T | F | F | F | F |
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Prove that: NOT (A AND B) = NOT A OR NOT B
Question:Prove that: NOT (A AND B) = NOT A OR NOT B
Answer
| A | B | A AND B | NOT (A AND B) | NOT A | NOT B | NOT A OR NOT B |
|---|---|---|---|---|---|---|
| F | F | F | T | T | T | T |
| F | T | F | T | T | F | T |
| T | F | F | T | F | T | T |
| T | T | T | F | F | F | F |
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Prove that: NOT (A AND B) = NOT A OR NOT B