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Which of the following function from Z t...

Which of the following function from Z to itself are bijections? `f(x)=x^3` (b) `f(x)=x+2` `f(x)=2x+1` (d) `f(x)=x^2+x`

A

`f(x)=x^(3)`

B

`f(x)=x+2`

C

`f(x)=2x+1`

D

`f(x)=x^(2)+x`

Text Solution

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The correct Answer is:
B
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