Determine the domain of the following graph:
12
11
10
9
8
7
5432
1
-12-11-10--8-7-6-5-4-3-2-1
-1
-2
دا نا
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
1 2 3 5 6 7
9 10 11 12