Systems of linear equations: System of linear equations and matrices
Row reduction of a matrix to a reduced echelon form
Determine the reduced row echelon form of the matrix \[\matrix{1 &-5 & -3 &9 \\
-1 &-11 &23 &-13 \\
1 &-9 &18 &-8 \\}\] You can enter an intermediate result to check whether you're still on the right track.
-1 &-11 &23 &-13 \\
1 &-9 &18 &-8 \\}\] You can enter an intermediate result to check whether you're still on the right track.
| \(\matrix{1 &-5 & -3 &9 \\ -1 &-11 &23 &-13 \\ 1 &-9 &18 &-8 \\}\sim{} \) |
\Box &\Box &\Box &\Box \\
\Box &\Box &\Box &\Box}\)
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