Question: Let /: R XR^Zbe the closed binary operation defined by f(a,b) = [a + b]. (a) Is f commutative? (b) Is f associative? (c) Does

Let /: R XR^Zbe the closed binary operation defined by f(a,b) = [a + b]. (a) Is f commutative? (b) Is f associative? (c) Does f have an identity element?

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