Explain solution RD Sharma class 12 chapter Functions exercise 2.1 question 5 sub question (ix) maths
defined by .
Bijection: function should be one-one and onto function.
Let x and y be any two elements in the domain (R) such that
So, f is an injection.
Let y be any element in the codomain (N) , such that for some element x in R .
So, f is a surjection.
So, f is a bijection.