1.

Check the injectivty and surjectiveity of the following functions : (i)f : N to Ngiven by f (x) = x ^(2) (ii) f :Z to Z given by f (x) = x ^(2) (iii) f : R to R given by f (x) =x ^(2) (iv) f : N to N given by f (x) = x ^(3) (v)f : Z to Z given by f (x) = x ^(3)

Answer»


ANSWER :(i) Injective but not surjective
(ii) Neither injective nor surjective
(III) Neither injective nor surjective
(iv) Injective but not surjective
(V) Injective but not surjective


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