2/Dùng bảng chân trị cm:
a/A$\Rightarrow$B=$\overline{A}$$V$B
b/(A$\Rightarrow$B)$\Lambda$$\overline{A}$=$\overline{A}$
Edited by datkjlop9a2hVvMF, 16-08-2012 - 15:41.
Edited by datkjlop9a2hVvMF, 16-08-2012 - 15:41.
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