Graph f(x)=1 if -1<x<=0; 2 if 0<x<=1; 3 if 1<x<=2

$f (x) = {\begin{cases} 1 & - 1 < x \leq 0 \\ 2 & 0 < x \leq 1 \\ 3 & 1 < x \leq 2 \end{cases}$

Step 1

Graph.

$f (x) = {\begin{cases} 1 & - 1 < x \leq 0 \\ 2 & 0 < x \leq 1 \\ 3 & 1 < x \leq 2 \end{cases}$

Step 2