# Chapter 7 - Exponential Functions - 7.2 Inverse Functions - Exercises - Page 334: 2

$f(x)=x^2+2$ is not one-to-one, $f(x)=x^2+2$ is one-to-one on $[0,\infty)$.

#### Work Step by Step

$f(x)=x^2+2$ is not one-to-one, because, for example $f(-1)=f(1)$ and $-1\neq 1$. $f(x)=x^2+2$ is one-to-one on $[0,\infty)$ (the right side of the parabola).

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