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Mathematics question. Please help
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Mathematics question. Please help

Mathematics question. Please help-example-1
User Granero
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Explanation:

Look at the table in picture above the result of table is true for all values so it is called tautology.

And there is a mistake in row 1.

Note:if you need to ask any question please let me know.

Mathematics question. Please help-example-1
User Tuddy
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