If f:R---R, f(x)=x 2 then f is: surjective or injective? why?

If f:R---R, f(x)=x2 then f is:
surjective or injective? why?


1 Answers

Harsh Patodia IIT Roorkee
askIITians Faculty 907 Points
7 years ago
It is neither surjective nor injective
as negative numbers in codomain don’t have any preimages

And x, -x in domain will be having same images.So not 1-1

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy


Get your questions answered by the expert for free