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 \[\matrix{1 &4 & 1 &1 \\
1 &20 &-19 &-19 \\
1 &0 &22 &22 \\}\] You can enter an intermediate result to check whether you're still on the right track.
1 &20 &-19 &-19 \\
1 &0 &22 &22 \\}\] You can enter an intermediate result to check whether you're still on the right track.
| \(\matrix{1 &4 & 1 &1 \\ 1 &20 &-19 &-19 \\ 1 &0 &22 &22 \\}\sim{} \) |
\Box &\Box &\Box &\Box \\
\Box &\Box &\Box &\Box}\)
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