I want to write $A$ as a product of $4$ matrices $B$,$C$,$D$, and $E$ such that $B$,$C$, and $D$ are elementary matrices and $E$ is row-echelon form.
$$
A = \begin{bmatrix}
0&1&7&8\\
1&3&3&8\\
-2&5&1&8
\end{bmatrix}
$$
Thanks
I want to write $A$ as a product of $4$ matrices $B$,$C$,$D$, and $E$ such that $B$,$C$, and $D$ are elementary matrices and $E$ is row-echelon form.
$$
A = \begin{bmatrix}
0&1&7&8\\
1&3&3&8\\
-2&5&1&8
\end{bmatrix}
$$
Thanks
I have injection $f \colon A \rightarrow B$ and I want to get bijection. Can I just resting codomain to $f(A)$? I know that every function i...
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