The answers to exercises marked IBB] can be found in the Back of the Book.[BB] For a, b ∈...

The answers to exercises marked IBB] can be found in the Back of the Book.

[BB] For a, b ∈ R\{0], define a ~ b if and only if .

(a) Prove that ~ is an equivalence relation.

(b) Find the equivalence class of 1.

(c) Show that