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(12) 4. Let P(x,y) be the statement x + y = x-y. If the universe is the set of integers, what are the truth values

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(12) 4. Let P(x,y) be the statement x + y = x-y. If the universe is the set of integers, what are the truth values of a. P(2.2) b. P(2.0) c. ExP(x2) d. 3yP(2,y) e. SyVxP(x,y) f. Vx3yP(x,y) (8) 5. Do the following expressions have the same truth value? a. 3xVyP(x,y) Vx3yP(x,y) b. 3xP(x) Vx-P(x) c. Vx(P(x) VQ(x)) VxP(x) VXQ(x) d. Vx(P(x) ^ Q(x)) VxP(x) A VXQ(x)

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