Which of the following functions from Z into Z are bijective? - Vidyadip

MCQ

Which of the following functions from $Z$ into $Z$ are bijective?

A
$f(x)=x^3$
✓
$f(x) = x + 2$
C
$f(x) = 2x + 1$
D
$f(x)=x^2+1$

✓

Answer

Correct option: B.

$f(x) = x + 2$

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