Q. 155.0( 1 Vote )

Mark the correct A.
B. 

C. h(x) = |x|

D. k(x) = x2

Answer :

Given that A = {x : –1 ≤ x ≤ 1}


a.


It is one-one but not onto.


b.


It is bijective as it is one-one and onto with range [-1, 1].


c. h(x) = |x|


It is not one-one because h(-1)=1 and h(1)=1.


d. k(x) = x2


It is not one-one because k(-1)=1 and k(1)=1.

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