Answer
a) $f\left( 0 \right)=2$.
b) $f\left( -3 \right)=-1\text{ and }f\left( 3 \right)=-1$.
Work Step by Step
(a)
It can be seen from the graph that the function f has a relative maximum at $f\left( 0 \right)=2$.
(b)
It can be seen from the graph that the function f has a relative minimum at −3 and 3.
The value of the relative minimum is $f\left( -3 \right)=-1\text{ and }f\left( 3 \right)=-1$.
