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(e) The universe of discourse is the set of all positive integers, Z+. What are the truth values for each of the following: i. xy(xy)

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(e) The universe of discourse is the set of all positive integers, Z+. What are the truth values for each of the following: i. xy(xy) ii. xy(x+y=0)(xy=0) iii. xy(xyx+y) (f) Re-write the following statements without any negations on quantifiers: i. xP(x) ii. xyP(x,y) iii. xyP(x,y)

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