1, Variation on 9.3#15. Let R be the relation represented by the matrix Mr = R1 0 0 1 Find the matrices that represent (a) R1[15 points] (b) R5 points] (c) R25 points) (d) The symmetric closure of R (e) The reflexive closure of R 5 points () R 20 points) Replace this text with your answer Replace this text with your answer Replace this text with your answer Replace this text with your answer Replace this text with your answer 5 points]