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Ensembles finis Exemples
Étape 1
Étape 1.1
Choose the row or column with the most elements. If there are no elements choose any row or column. Multiply every element in row by its cofactor and add.
Étape 1.1.1
Consider the corresponding sign chart.
Étape 1.1.2
The cofactor is the minor with the sign changed if the indices match a position on the sign chart.
Étape 1.1.3
The minor for is the determinant with row and column deleted.
Étape 1.1.4
Multiply element by its cofactor.
Étape 1.1.5
The minor for is the determinant with row and column deleted.
Étape 1.1.6
Multiply element by its cofactor.
Étape 1.1.7
The minor for is the determinant with row and column deleted.
Étape 1.1.8
Multiply element by its cofactor.
Étape 1.1.9
Add the terms together.
Étape 1.2
Multipliez par .
Étape 1.3
Multipliez par .
Étape 1.4
Multipliez par .
Étape 1.5
Simplifiez le déterminant.
Étape 1.5.1
Additionnez et .
Étape 1.5.2
Additionnez et .
Étape 2
There is no inverse because the determinant is .