how do i tell if the following equations define a binary operation on Z? a) m*n=(m+n)/2 b) m*n=mn^2 c) m*n=2^(mn) d) m*n=sqrt(mn)
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Originally Posted by mandy123 how do i tell if the following equations define a binary operation on Z? a) m*n=(m+n)/2 b) m*n=mn^2 c) m*n=2^(mn) d) m*n=sqrt(mn) Which of these produces integers?
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Originally Posted by mandy123 
