for the question: Assume that R and S are relations on a set A. Prove
(using relation-algebraic calculations) or disprove (by providing
counterexamples) each of the following statements.
a) If R and S are both reflexive, then R ∪ S is reflexive, too.
how would i start to answer this question its the syntax of the answer iam having trouble with
This is what i have R U S = R Subset of S = A<=>A subset of S = Id A subset of S therefore reflexive