Grade 12Algebra
If f:R---R, f(x)=x2 then f is:surjective or injective? why?
If f:R---R, f(x)=x2 then f is:
surjective or injective? why?
1 Answer
Harsh Patodia
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
as negative numbers in codomain don’t have any preimages
And x, -x in domain will be having same images.So not 1-1
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