State De-Morgan's theorems.

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Solution

i) The complement of a sum is equal to the product of the complements. If A and B are the inputs, then $¯ ¯¯¯¯¯¯¯¯¯¯¯¯¯ ¯ A + B = ¯ A \cdot ¯ B$ .
ii) The complement of a product is equal to the sum of the complements.
$¯ ¯¯¯¯¯¯¯¯¯¯ ¯ A \cdot B = ¯ A + ¯ B$ .

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