Answer
$maximum$, $minimum$
Work Step by Step
Recall the definitions of relative minimum and maximum of functions. We have:
- If $f(a)\gt f(x)$ in an open interval containing $a$, $x \ne a$, then the function value $f(a)$ is a relative $maximum$ of $f$.
- If $f(b) \lt f(x)$ in an open interval containing $b$, $x\ne b$, then the function value $f(b)$ is a relative $minimum$ of $f$.
