NCERT Exercise 1.2 Q1 - Relations and Functions

Question: Show that f : R* → R*, f(x) = 1/x is one-one and onto. Is the result true if the domain is replaced by N with the same codomain R*?

Answer: f : R* → R* is bijective; the result is not true for f : N → R*.

Full step-by-step NCERT solution with diagrams on Something by Zero.