7. Explain why VxP(x)V3xQ(x) is logically equivalent to Vrly(P(x)\Q(y)). (A written English explanation may be easier than using logical equiva- lences.)

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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7. Explain why
VxP(x)\xQ(x) is logically equivalent to Vxy(P(x)\Q(y)).
(A written English explanation may be easier than using logical equiva-
lences.)
Transcribed Image Text:7. Explain why VxP(x)\xQ(x) is logically equivalent to Vxy(P(x)\Q(y)). (A written English explanation may be easier than using logical equiva- lences.)
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