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aryaelfkind aryaelfkind
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2 weeks ago
Is “B ≡ (O ∙ ~K) .·. O v (K v ~B)” valid or invalid? In the truth table for determining the validity of this formula, which specific rows, if any, are relevant to showing this?

▸ invalid; 2nd and 4th rows

▸ invalid; 1st and 3rd rows

▸ valid; it has no rows showing invalidity
Textbook 
How to Think Logically

How to Think Logically


Edition: 2nd
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ecunis1ecunis1
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valid; it has no rows showing invalidity
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aryaelfkind
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