Question: 1. (4 marks) Determine whether the expression Elx Vy (xy = x(y+1)) is true or false when the domain of discourse is (i) the set

1. (4 marks) Determine whether the expression Elx Vy (xy = x(y+1)) is true or false when the domain of discourse is (i) the set of all integers. (ii) the set of all positive integers. Justify your answers

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