数分问题求证明Exercise 8.Suppose on a recent exam,Amy received an A,Joe received a D,Megreceived a B,and Sam received an A.Let R = { Amy,Joe,Meg,Sam }10 1.PREPARATORY MATERIALLet S = {A,B,C,D,F}Let T = {A,B,D}Let f = {(Amy,A),(Joe,D),(Meg,B),(

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