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Q3. Prove that the following are valid. Use introduction and elimination rules for ,, V, , and 30 points c) xP(x),y[P(y)Q(y)]xQ(x)
Q3. Prove that the following are valid. Use introduction and elimination rules for ,, V, , and 30 points c) xP(x),y[P(y)Q(y)]xQ(x)
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