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Question

Let A = {x | -1< x< 1} = B. The function f(x)=x/2 from A to B is:

a.

injective

b.

surjective

c.

both injective and surjective

d.

neither injective nor surjective

Answer: (c).both injective and surjective

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Q. Let A = {x | -1< x< 1} = B. The function f(x)=x/2 from A to B is:

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