Algèbre Exemples
[4236-710101][4236−710101]
Étape 1
Étape 1.1
Multiply each element of R1R1 by 1414 to make the entry at 1,11,1 a 11.
Étape 1.1.1
Multiply each element of R1R1 by 1414 to make the entry at 1,11,1 a 11.
[44243464-7410101][44243464−7410101]
Étape 1.1.2
Simplifiez R1R1.
[1123432-7410101][1123432−7410101]
[1123432-7410101][1123432−7410101]
Étape 1.2
Perform the row operation R2=R2-R1R2=R2−R1 to make the entry at 2,12,1 a 00.
Étape 1.2.1
Perform the row operation R2=R2-R1R2=R2−R1 to make the entry at 2,12,1 a 00.
[1123432-741-10-121-340-321+74][1123432−741−10−121−340−321+74]
Étape 1.2.2
Simplifiez R2R2.
[1123432-740-1214-32114][1123432−740−1214−32114]
[1123432-740-1214-32114][1123432−740−1214−32114]
Étape 1.3
Multiply each element of R2R2 by -2−2 to make the entry at 2,22,2 a 11.
Étape 1.3.1
Multiply each element of R2R2 by -2−2 to make the entry at 2,22,2 a 11.
[1123432-74-2⋅0-2(-12)-2(14)-2(-32)-2(114)]⎡⎢⎣1123432−74−2⋅0−2(−12)−2(14)−2(−32)−2(114)⎤⎥⎦
Étape 1.3.2
Simplifiez R2R2.
[1123432-7401-123-112][1123432−7401−123−112]
[1123432-7401-123-112][1123432−7401−123−112]
Étape 1.4
Perform the row operation R1=R1-12R2R1=R1−12R2 to make the entry at 1,21,2 a 00.
Étape 1.4.1
Perform the row operation R1=R1-12R2R1=R1−12R2 to make the entry at 1,21,2 a 00.
[1-12⋅012-12⋅134-12(-12)32-12⋅3-74-12(-112)01-123-112][1−12⋅012−12⋅134−12(−12)32−12⋅3−74−12(−112)01−123−112]
Étape 1.4.2
Simplifiez R1R1.
[1010101-123-112][1010101−123−112]
[1010101-123-112][1010101−123−112]
[1010101-123-112][1010101−123−112]
Étape 2
The pivot positions are the locations with the leading 11 in each row. The pivot columns are the columns that have a pivot position.
Pivot Positions: a11a11 and a22a22
Pivot Columns: 11 and 22
Étape 3
The rank is the number of pivot columns.
22