Answer:
[tex]\left[\begin{array}{cccc}0&0&0&0\\1&1&1&1\\2&2&2&2\end{array}\right][/tex]
Step-by-step explanation:
The matrix should have
- A row with four horizontal zeros
- A row with 4 horizontal ones
- A row with 4 horizontal twos
Thus, it should have the following form
[tex]\left[\begin{array}{cccc}0&0&0&0\\1&1&1&1\\2&2&2&2\end{array}\right][/tex]
Always remember that the columns are vertical (just think about normal columns) and the rown are horizontal.
I hope that works for you!