Mathematics, 23.06.2021 21:40 lukecoupland4401

Chứng minh công thức sau đây là hằng đúng bằng hai phương pháp ( lập bảng và biến đổi tương đương ) : 1 . ( m →(N v Q)) →((M→N) v (M→Q)) 2.((T v U) → V) → (T → (U → V))

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Chứng minh công thức sau đây là hằng đúng bằng hai phương pháp ( lập bảng và biến đổi tương đương )...

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