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If a row doesn’t consist entirely of
zeros, then the first non zero
number in the row is a 1. We call this
as leading 1.
If there are any rows that consist entirely of zeros ,
then they are grouped together at Bottom of the
matrix.
In any two successive rows that
do not consist entirely of zeros, the
leading 1 in the lower row occurs
farther to the right than the leading 1 in
the higher row.
Each column that contains a leading
1 has zeros everywhere else in that column.
Reduced Row Echelon Form
Gauss Jordan Gauss Jordan
Gauss Elimination Method
4-4 5-8 12-3 0 -3 -6
Leading 1
Zeros below the leading 1 (6-6 7-12 8-18)
0 -5 -10
Row Echelon Form
Gauss Elimination Method
4-4 5-8 12-3 0 -3 -6
Leading 1
Zeros below the leading 1
0 -5 -10
0 1 2
0 1 2
Row Echelon Form
Gauss Elimination Method
4-4 5-8 12-3 0 -3 9
Leading 1
Zeros below the leading 1
0 -5 -10
0 1 2
0 1 2 0 0 0
Row Echelon Form