(Solved): show steps  1. Find the row echelon form for each of the following matrices: (a) \( \left[\begi ...

1. Find the row echelon form for each of the following matrices: (a) \( \left[\begin{array}{lll}2 & 1 & 3 \\ 5 & 3 & 2 \\ 1 & 4 & 3\end{array}\right] \) (b) \( \left[\begin{array}{lll}0 & 1 & 1 \\ 1 & 0 & 1 \\ 1 & 1 & 0\end{array}\right] \) (c) \( \left[\begin{array}{cccc}2 & -5 & 1 & 2 \\ -3 & 7 & -1 & 4 \\ 5 & -9 & 2 & 7 \\ 4 & -6 & 1 & 2\end{array}\right] \)