Need solution for RD Sharma maths class 12 chapter Functions exercise 2.1 question 5 sub question (xi)
Neither injective nor surjective.
defined by .
Injective (one-one): function means every element in the domain has a distinct image in the co-domain.
Surjective(Onto): function means every element in the co-domain has at least one pre image in the domain of function.
( by formula)
So, for every x in R.
For all elements in the domain the image is 1. So,f is not an injective.
Range of , co-domain of f=R
Both are not the same.
So, f is not a surjection and f is not a bijection.