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Question

Let R be the relation on Z defined by R = {(a, b): a, b ϵ Z2,ab is an integer}. Find the domain and range of R.

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Solution

Here R={(a,b):a,b ϵ Z,ab is an integer}

={(a,b):a,b ϵ Z, both a and b are even or both a and b are odd}

={(a,b):a,b ϵ Z, (a and b are even) (a, and b are odd)}

Domain of R = Z

Range of R = Z


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