a ) Let R be the relation on the set A={1,2,3,4} defined by aRb if and only if 2a>b+1. Find the matrix representing R∘R.     b) Suppose that the relation R is defined on the set Z where aRb means a= ±b. Show that R is an equivalence relation. i would like to  get a non handwriting answer to be easy to cope please

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A: Thanks for the question :)And your upvote will be really appreciable ;)

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