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الجبر الخطي الأمثلة
[8423]
خطوة 1
Consider the corresponding sign chart.
[+--+]
خطوة 2
خطوة 2.1
Calculate the minor for element a11.
خطوة 2.1.1
The minor for a11 is the determinant with row 1 and column 1 deleted.
|3|
خطوة 2.1.2
محدد المصفوفة 1×1 هو العنصر نفسه.
a11=3
a11=3
خطوة 2.2
Calculate the minor for element a12.
خطوة 2.2.1
The minor for a12 is the determinant with row 1 and column 2 deleted.
|2|
خطوة 2.2.2
محدد المصفوفة 1×1 هو العنصر نفسه.
a12=2
a12=2
خطوة 2.3
Calculate the minor for element a21.
خطوة 2.3.1
The minor for a21 is the determinant with row 2 and column 1 deleted.
|4|
خطوة 2.3.2
محدد المصفوفة 1×1 هو العنصر نفسه.
a21=4
a21=4
خطوة 2.4
Calculate the minor for element a22.
خطوة 2.4.1
The minor for a22 is the determinant with row 2 and column 2 deleted.
|8|
خطوة 2.4.2
محدد المصفوفة 1×1 هو العنصر نفسه.
a22=8
a22=8
خطوة 2.5
The cofactor matrix is a matrix of the minors with the sign changed for the elements in the - positions on the sign chart.
[3-2-48]
[3-2-48]
خطوة 3
Transpose the matrix by switching its rows to columns.
[3-4-28]