## Calculus with Applications (10th Edition)

$f(x)$ is even.
$f(x)$ is odd if $f(-x)=-f(x)$ $f(x)$ is even if $f(-x)=f(x)$ ------------- $f(x)=x^{2}-3$ $f(-x)=(-x)^{2}-3=x^{2}-3=f(x)$ $f(x)$ is even.