Please explain all steps, thank you!
5. Determine whether each of the following relations R A × A, where A is the set of all CU students, is reflexive, symmetric, transitive, and/or an equivalence relation. Briefly justify each conclusion (a) (a, b) є R if and only if a shares at least one class with b. (b) (a, b) E R if and only if a has a higher GPA than b. (c) (a,
OR
OR