- #1
Char. Limit
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Homework Statement
Yeah, so I'm just starting LinAlg, and I wanted to check my answer on a certain question. The question reads:
"Describe the possible echelon forms of a nonzero 3x2 matrix. Use the symbols [tex]\diamond[/tex], *, and 0, as in the first part of example 1."
Now, here, the [tex]\diamond[/tex] indicates a nonzero entry, the * indicates an entry that can be any value, and the 0 indicates, well, a zero entry.
The Attempt at a Solution
So I got four matrices:
[tex]\left[ \begin{array}{cc}
\diamond & 0 \\
0 & 0 \\
0 & 0 \\
\end{array} \right][/tex]
[tex]\left[ \begin{array}{cc}
\diamond & * \\
0 & \diamond \\
0 & 0 \\
\end{array} \right][/tex]
[tex]\left[ \begin{array}{cc}
\diamond & * \\
0 & * \\
0 & \diamond \\
\end{array} \right][/tex]
[tex]\left[ \begin{array}{cc}
\diamond & * \\
0 & * \\
0 & * \\
\end{array} \right][/tex]
However, I feel like I'm missing some. Can you help me with which ones?