Álgebra lineal Ejemplos

$[\begin{array}{c} 2 & 0 & 1 & 4 \\ - 2 & 1 & 0 & 0 \\ 1 & - 1 & 3 & 2 \\ - 1 & 0 & 0 & 2 \end{array}]$

Paso 1

Consider the corresponding sign chart.

$[\begin{array}{c} + & - & + & - \\ - & + & - & + \\ + & - & + & - \\ - & + & - & + \end{array}]$

Paso 2

Use the sign chart and the given matrix to find the cofactor of each element.

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Paso 2.1

Calculate the minor for element $a_{11}$ .

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Paso 2.1.1

The minor for $a_{11}$ is the determinant with row $1$ and column $1$ deleted.

$| \begin{array}{c} 1 & 0 & 0 \\ - 1 & 3 & 2 \\ 0 & 0 & 2 \end{array} |$

Paso 2.1.2

Evaluate the determinant.

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Paso 2.1.2.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in row $1$ by its cofactor and add.

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Paso 2.1.2.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Paso 2.1.2.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Paso 2.1.2.1.3

The minor for $a_{11}$ is the determinant with row $1$ and column $1$ deleted.

$| \begin{array}{c} 3 & 2 \\ 0 & 2 \end{array} |$

Paso 2.1.2.1.4

Multiply element $a_{11}$ by its cofactor.

$1 | \begin{array}{c} 3 & 2 \\ 0 & 2 \end{array} |$

Paso 2.1.2.1.5

The minor for $a_{12}$ is the determinant with row $1$ and column $2$ deleted.

$| \begin{array}{c} - 1 & 2 \\ 0 & 2 \end{array} |$

Paso 2.1.2.1.6

Multiply element $a_{12}$ by its cofactor.

$0 | \begin{array}{c} - 1 & 2 \\ 0 & 2 \end{array} |$

Paso 2.1.2.1.7

The minor for $a_{13}$ is the determinant with row $1$ and column $3$ deleted.

$| \begin{array}{c} - 1 & 3 \\ 0 & 0 \end{array} |$

Paso 2.1.2.1.8

Multiply element $a_{13}$ by its cofactor.

$0 | \begin{array}{c} - 1 & 3 \\ 0 & 0 \end{array} |$

Paso 2.1.2.1.9

Add the terms together.

$a_{11} = 1 | \begin{array}{c} 3 & 2 \\ 0 & 2 \end{array} | + 0 | \begin{array}{c} - 1 & 2 \\ 0 & 2 \end{array} | + 0 | \begin{array}{c} - 1 & 3 \\ 0 & 0 \end{array} |$

Paso 2.1.2.2

Multiplica $0$ por $| \begin{array}{c} - 1 & 2 \\ 0 & 2 \end{array} |$ .

$a_{11} = 1 | \begin{array}{c} 3 & 2 \\ 0 & 2 \end{array} | + 0 + 0 | \begin{array}{c} - 1 & 3 \\ 0 & 0 \end{array} |$

Paso 2.1.2.3

Multiplica $0$ por $| \begin{array}{c} - 1 & 3 \\ 0 & 0 \end{array} |$ .

$a_{11} = 1 | \begin{array}{c} 3 & 2 \\ 0 & 2 \end{array} | + 0 + 0$

Paso 2.1.2.4

Evalúa $| \begin{array}{c} 3 & 2 \\ 0 & 2 \end{array} |$ .

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Paso 2.1.2.4.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{11} = 1 (3 \cdot 2 + 0 \cdot 2) + 0 + 0$

Paso 2.1.2.4.2

Simplifica el determinante.

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Paso 2.1.2.4.2.1

Simplifica cada término.

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Paso 2.1.2.4.2.1.1

Multiplica $3$ por $2$ .

$a_{11} = 1 (6 + 0 \cdot 2) + 0 + 0$

Paso 2.1.2.4.2.1.2

Multiplica $0$ por $2$ .

$a_{11} = 1 (6 + 0) + 0 + 0$

Paso 2.1.2.4.2.2

Suma $6$ y $0$ .

$a_{11} = 1 \cdot 6 + 0 + 0$

Paso 2.1.2.5

Simplifica el determinante.

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Paso 2.1.2.5.1

Multiplica $6$ por $1$ .

$a_{11} = 6 + 0 + 0$

Paso 2.1.2.5.2

Suma $6$ y $0$ .

$a_{11} = 6 + 0$

Paso 2.1.2.5.3

Suma $6$ y $0$ .

$a_{11} = 6$

Paso 2.2

Calculate the minor for element $a_{12}$ .

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Paso 2.2.1

The minor for $a_{12}$ is the determinant with row $1$ and column $2$ deleted.

$| \begin{array}{c} - 2 & 0 & 0 \\ 1 & 3 & 2 \\ - 1 & 0 & 2 \end{array} |$

Paso 2.2.2

Evaluate the determinant.

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Paso 2.2.2.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in row $1$ by its cofactor and add.

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Paso 2.2.2.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Paso 2.2.2.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Paso 2.2.2.1.3

The minor for $a_{11}$ is the determinant with row $1$ and column $1$ deleted.

$| \begin{array}{c} 3 & 2 \\ 0 & 2 \end{array} |$

Paso 2.2.2.1.4

Multiply element $a_{11}$ by its cofactor.

$- 2 | \begin{array}{c} 3 & 2 \\ 0 & 2 \end{array} |$

Paso 2.2.2.1.5

The minor for $a_{12}$ is the determinant with row $1$ and column $2$ deleted.

$| \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} |$

Paso 2.2.2.1.6

Multiply element $a_{12}$ by its cofactor.

$0 | \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} |$

Paso 2.2.2.1.7

The minor for $a_{13}$ is the determinant with row $1$ and column $3$ deleted.

$| \begin{array}{c} 1 & 3 \\ - 1 & 0 \end{array} |$

Paso 2.2.2.1.8

Multiply element $a_{13}$ by its cofactor.

$0 | \begin{array}{c} 1 & 3 \\ - 1 & 0 \end{array} |$

Paso 2.2.2.1.9

Add the terms together.

$a_{12} = - 2 | \begin{array}{c} 3 & 2 \\ 0 & 2 \end{array} | + 0 | \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} | + 0 | \begin{array}{c} 1 & 3 \\ - 1 & 0 \end{array} |$

Paso 2.2.2.2

Multiplica $0$ por $| \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} |$ .

$a_{12} = - 2 | \begin{array}{c} 3 & 2 \\ 0 & 2 \end{array} | + 0 + 0 | \begin{array}{c} 1 & 3 \\ - 1 & 0 \end{array} |$

Paso 2.2.2.3

Multiplica $0$ por $| \begin{array}{c} 1 & 3 \\ - 1 & 0 \end{array} |$ .

$a_{12} = - 2 | \begin{array}{c} 3 & 2 \\ 0 & 2 \end{array} | + 0 + 0$

Paso 2.2.2.4

Evalúa $| \begin{array}{c} 3 & 2 \\ 0 & 2 \end{array} |$ .

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Paso 2.2.2.4.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{12} = - 2 (3 \cdot 2 + 0 \cdot 2) + 0 + 0$

Paso 2.2.2.4.2

Simplifica el determinante.

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Paso 2.2.2.4.2.1

Simplifica cada término.

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Paso 2.2.2.4.2.1.1

Multiplica $3$ por $2$ .

$a_{12} = - 2 (6 + 0 \cdot 2) + 0 + 0$

Paso 2.2.2.4.2.1.2

Multiplica $0$ por $2$ .

$a_{12} = - 2 (6 + 0) + 0 + 0$

Paso 2.2.2.4.2.2

Suma $6$ y $0$ .

$a_{12} = - 2 \cdot 6 + 0 + 0$

Paso 2.2.2.5

Simplifica el determinante.

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Paso 2.2.2.5.1

Multiplica $- 2$ por $6$ .

$a_{12} = - 12 + 0 + 0$

Paso 2.2.2.5.2

Suma $- 12$ y $0$ .

$a_{12} = - 12 + 0$

Paso 2.2.2.5.3

Suma $- 12$ y $0$ .

$a_{12} = - 12$

Paso 2.3

Calculate the minor for element $a_{13}$ .

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Paso 2.3.1

The minor for $a_{13}$ is the determinant with row $1$ and column $3$ deleted.

$| \begin{array}{c} - 2 & 1 & 0 \\ 1 & - 1 & 2 \\ - 1 & 0 & 2 \end{array} |$

Paso 2.3.2

Evaluate the determinant.

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Paso 2.3.2.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in row $1$ by its cofactor and add.

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Paso 2.3.2.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Paso 2.3.2.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Paso 2.3.2.1.3

The minor for $a_{11}$ is the determinant with row $1$ and column $1$ deleted.

$| \begin{array}{c} - 1 & 2 \\ 0 & 2 \end{array} |$

Paso 2.3.2.1.4

Multiply element $a_{11}$ by its cofactor.

$- 2 | \begin{array}{c} - 1 & 2 \\ 0 & 2 \end{array} |$

Paso 2.3.2.1.5

The minor for $a_{12}$ is the determinant with row $1$ and column $2$ deleted.

$| \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} |$

Paso 2.3.2.1.6

Multiply element $a_{12}$ by its cofactor.

$- 1 | \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} |$

Paso 2.3.2.1.7

The minor for $a_{13}$ is the determinant with row $1$ and column $3$ deleted.

$| \begin{array}{c} 1 & - 1 \\ - 1 & 0 \end{array} |$

Paso 2.3.2.1.8

Multiply element $a_{13}$ by its cofactor.

$0 | \begin{array}{c} 1 & - 1 \\ - 1 & 0 \end{array} |$

Paso 2.3.2.1.9

Add the terms together.

$a_{13} = - 2 | \begin{array}{c} - 1 & 2 \\ 0 & 2 \end{array} | - 1 | \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} | + 0 | \begin{array}{c} 1 & - 1 \\ - 1 & 0 \end{array} |$

Paso 2.3.2.2

Multiplica $0$ por $| \begin{array}{c} 1 & - 1 \\ - 1 & 0 \end{array} |$ .

$a_{13} = - 2 | \begin{array}{c} - 1 & 2 \\ 0 & 2 \end{array} | - 1 | \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} | + 0$

Paso 2.3.2.3

Evalúa $| \begin{array}{c} - 1 & 2 \\ 0 & 2 \end{array} |$ .

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Paso 2.3.2.3.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{13} = - 2 (- 1 \cdot 2 + 0 \cdot 2) - 1 | \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} | + 0$

Paso 2.3.2.3.2

Simplifica el determinante.

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Paso 2.3.2.3.2.1

Simplifica cada término.

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Paso 2.3.2.3.2.1.1

Multiplica $- 1$ por $2$ .

$a_{13} = - 2 (- 2 + 0 \cdot 2) - 1 | \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} | + 0$

Paso 2.3.2.3.2.1.2

Multiplica $0$ por $2$ .

$a_{13} = - 2 (- 2 + 0) - 1 | \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} | + 0$

Paso 2.3.2.3.2.2

Suma $- 2$ y $0$ .

$a_{13} = - 2 \cdot - 2 - 1 | \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} | + 0$

Paso 2.3.2.4

Evalúa $| \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} |$ .

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Paso 2.3.2.4.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{13} = - 2 \cdot - 2 - 1 (1 \cdot 2 - (- 1 \cdot 2)) + 0$

Paso 2.3.2.4.2

Simplifica el determinante.

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Paso 2.3.2.4.2.1

Simplifica cada término.

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Paso 2.3.2.4.2.1.1

Multiplica $2$ por $1$ .

$a_{13} = - 2 \cdot - 2 - 1 (2 - (- 1 \cdot 2)) + 0$

Paso 2.3.2.4.2.1.2

Multiplica $- (- 1 \cdot 2)$ .

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Paso 2.3.2.4.2.1.2.1

Multiplica $- 1$ por $2$ .

$a_{13} = - 2 \cdot - 2 - 1 (2 - - 2) + 0$

Paso 2.3.2.4.2.1.2.2

Multiplica $- 1$ por $- 2$ .

$a_{13} = - 2 \cdot - 2 - 1 (2 + 2) + 0$

Paso 2.3.2.4.2.2

Suma $2$ y $2$ .

$a_{13} = - 2 \cdot - 2 - 1 \cdot 4 + 0$

Paso 2.3.2.5

Simplifica el determinante.

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Paso 2.3.2.5.1

Simplifica cada término.

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Paso 2.3.2.5.1.1

Multiplica $- 2$ por $- 2$ .

$a_{13} = 4 - 1 \cdot 4 + 0$

Paso 2.3.2.5.1.2

Multiplica $- 1$ por $4$ .

$a_{13} = 4 - 4 + 0$

Paso 2.3.2.5.2

Resta $4$ de $4$ .

$a_{13} = 0 + 0$

Paso 2.3.2.5.3

Suma $0$ y $0$ .

$a_{13} = 0$

Paso 2.4

Calculate the minor for element $a_{14}$ .

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Paso 2.4.1

The minor for $a_{14}$ is the determinant with row $1$ and column $4$ deleted.

$| \begin{array}{c} - 2 & 1 & 0 \\ 1 & - 1 & 3 \\ - 1 & 0 & 0 \end{array} |$

Paso 2.4.2

Evaluate the determinant.

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Paso 2.4.2.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in row $3$ by its cofactor and add.

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Paso 2.4.2.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Paso 2.4.2.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Paso 2.4.2.1.3

The minor for $a_{31}$ is the determinant with row $3$ and column $1$ deleted.

$| \begin{array}{c} 1 & 0 \\ - 1 & 3 \end{array} |$

Paso 2.4.2.1.4

Multiply element $a_{31}$ by its cofactor.

$- 1 | \begin{array}{c} 1 & 0 \\ - 1 & 3 \end{array} |$

Paso 2.4.2.1.5

The minor for $a_{32}$ is the determinant with row $3$ and column $2$ deleted.

$| \begin{array}{c} - 2 & 0 \\ 1 & 3 \end{array} |$

Paso 2.4.2.1.6

Multiply element $a_{32}$ by its cofactor.

$0 | \begin{array}{c} - 2 & 0 \\ 1 & 3 \end{array} |$

Paso 2.4.2.1.7

The minor for $a_{33}$ is the determinant with row $3$ and column $3$ deleted.

$| \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.4.2.1.8

Multiply element $a_{33}$ by its cofactor.

$0 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.4.2.1.9

Add the terms together.

$a_{14} = - 1 | \begin{array}{c} 1 & 0 \\ - 1 & 3 \end{array} | + 0 | \begin{array}{c} - 2 & 0 \\ 1 & 3 \end{array} | + 0 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.4.2.2

Multiplica $0$ por $| \begin{array}{c} - 2 & 0 \\ 1 & 3 \end{array} |$ .

$a_{14} = - 1 | \begin{array}{c} 1 & 0 \\ - 1 & 3 \end{array} | + 0 + 0 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.4.2.3

Multiplica $0$ por $| \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$ .

$a_{14} = - 1 | \begin{array}{c} 1 & 0 \\ - 1 & 3 \end{array} | + 0 + 0$

Paso 2.4.2.4

Evalúa $| \begin{array}{c} 1 & 0 \\ - 1 & 3 \end{array} |$ .

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Paso 2.4.2.4.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{14} = - 1 (1 \cdot 3 - - 0) + 0 + 0$

Paso 2.4.2.4.2

Simplifica el determinante.

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Paso 2.4.2.4.2.1

Simplifica cada término.

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Paso 2.4.2.4.2.1.1

Multiplica $3$ por $1$ .

$a_{14} = - 1 (3 - - 0) + 0 + 0$

Paso 2.4.2.4.2.1.2

Multiplica $- - 0$ .

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Paso 2.4.2.4.2.1.2.1

Multiplica $- 1$ por $0$ .

$a_{14} = - 1 (3 - 0) + 0 + 0$

Paso 2.4.2.4.2.1.2.2

Multiplica $- 1$ por $0$ .

$a_{14} = - 1 (3 + 0) + 0 + 0$

Paso 2.4.2.4.2.2

Suma $3$ y $0$ .

$a_{14} = - 1 \cdot 3 + 0 + 0$

Paso 2.4.2.5

Simplifica el determinante.

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Paso 2.4.2.5.1

Multiplica $- 1$ por $3$ .

$a_{14} = - 3 + 0 + 0$

Paso 2.4.2.5.2

Suma $- 3$ y $0$ .

$a_{14} = - 3 + 0$

Paso 2.4.2.5.3

Suma $- 3$ y $0$ .

$a_{14} = - 3$

Paso 2.5

Calculate the minor for element $a_{21}$ .

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Paso 2.5.1

The minor for $a_{21}$ is the determinant with row $2$ and column $1$ deleted.

$| \begin{array}{c} 0 & 1 & 4 \\ - 1 & 3 & 2 \\ 0 & 0 & 2 \end{array} |$

Paso 2.5.2

Evaluate the determinant.

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Paso 2.5.2.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in column $1$ by its cofactor and add.

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Paso 2.5.2.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Paso 2.5.2.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Paso 2.5.2.1.3

The minor for $a_{11}$ is the determinant with row $1$ and column $1$ deleted.

$| \begin{array}{c} 3 & 2 \\ 0 & 2 \end{array} |$

Paso 2.5.2.1.4

Multiply element $a_{11}$ by its cofactor.

$0 | \begin{array}{c} 3 & 2 \\ 0 & 2 \end{array} |$

Paso 2.5.2.1.5

The minor for $a_{21}$ is the determinant with row $2$ and column $1$ deleted.

$| \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} |$

Paso 2.5.2.1.6

Multiply element $a_{21}$ by its cofactor.

$1 | \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} |$

Paso 2.5.2.1.7

The minor for $a_{31}$ is the determinant with row $3$ and column $1$ deleted.

$| \begin{array}{c} 1 & 4 \\ 3 & 2 \end{array} |$

Paso 2.5.2.1.8

Multiply element $a_{31}$ by its cofactor.

$0 | \begin{array}{c} 1 & 4 \\ 3 & 2 \end{array} |$

Paso 2.5.2.1.9

Add the terms together.

$a_{21} = 0 | \begin{array}{c} 3 & 2 \\ 0 & 2 \end{array} | + 1 | \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} | + 0 | \begin{array}{c} 1 & 4 \\ 3 & 2 \end{array} |$

Paso 2.5.2.2

Multiplica $0$ por $| \begin{array}{c} 3 & 2 \\ 0 & 2 \end{array} |$ .

$a_{21} = 0 + 1 | \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} | + 0 | \begin{array}{c} 1 & 4 \\ 3 & 2 \end{array} |$

Paso 2.5.2.3

Multiplica $0$ por $| \begin{array}{c} 1 & 4 \\ 3 & 2 \end{array} |$ .

$a_{21} = 0 + 1 | \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} | + 0$

Paso 2.5.2.4

Evalúa $| \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} |$ .

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Paso 2.5.2.4.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{21} = 0 + 1 (1 \cdot 2 + 0 \cdot 4) + 0$

Paso 2.5.2.4.2

Simplifica el determinante.

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Paso 2.5.2.4.2.1

Simplifica cada término.

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Paso 2.5.2.4.2.1.1

Multiplica $2$ por $1$ .

$a_{21} = 0 + 1 (2 + 0 \cdot 4) + 0$

Paso 2.5.2.4.2.1.2

Multiplica $0$ por $4$ .

$a_{21} = 0 + 1 (2 + 0) + 0$

Paso 2.5.2.4.2.2

Suma $2$ y $0$ .

$a_{21} = 0 + 1 \cdot 2 + 0$

Paso 2.5.2.5

Simplifica el determinante.

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Paso 2.5.2.5.1

Multiplica $2$ por $1$ .

$a_{21} = 0 + 2 + 0$

Paso 2.5.2.5.2

Suma $0$ y $2$ .

$a_{21} = 2 + 0$

Paso 2.5.2.5.3

Suma $2$ y $0$ .

$a_{21} = 2$

Paso 2.6

Calculate the minor for element $a_{22}$ .

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Paso 2.6.1

The minor for $a_{22}$ is the determinant with row $2$ and column $2$ deleted.

$| \begin{array}{c} 2 & 1 & 4 \\ 1 & 3 & 2 \\ - 1 & 0 & 2 \end{array} |$

Paso 2.6.2

Evaluate the determinant.

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Paso 2.6.2.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in column $2$ by its cofactor and add.

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Paso 2.6.2.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Paso 2.6.2.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Paso 2.6.2.1.3

The minor for $a_{12}$ is the determinant with row $1$ and column $2$ deleted.

$| \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} |$

Paso 2.6.2.1.4

Multiply element $a_{12}$ by its cofactor.

$- 1 | \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} |$

Paso 2.6.2.1.5

The minor for $a_{22}$ is the determinant with row $2$ and column $2$ deleted.

$| \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} |$

Paso 2.6.2.1.6

Multiply element $a_{22}$ by its cofactor.

$3 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} |$

Paso 2.6.2.1.7

The minor for $a_{32}$ is the determinant with row $3$ and column $2$ deleted.

$| \begin{array}{c} 2 & 4 \\ 1 & 2 \end{array} |$

Paso 2.6.2.1.8

Multiply element $a_{32}$ by its cofactor.

$0 | \begin{array}{c} 2 & 4 \\ 1 & 2 \end{array} |$

Paso 2.6.2.1.9

Add the terms together.

$a_{22} = - 1 | \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} | + 3 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} | + 0 | \begin{array}{c} 2 & 4 \\ 1 & 2 \end{array} |$

Paso 2.6.2.2

Multiplica $0$ por $| \begin{array}{c} 2 & 4 \\ 1 & 2 \end{array} |$ .

$a_{22} = - 1 | \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} | + 3 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} | + 0$

Paso 2.6.2.3

Evalúa $| \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} |$ .

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Paso 2.6.2.3.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{22} = - 1 (1 \cdot 2 - (- 1 \cdot 2)) + 3 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} | + 0$

Paso 2.6.2.3.2

Simplifica el determinante.

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Paso 2.6.2.3.2.1

Simplifica cada término.

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Paso 2.6.2.3.2.1.1

Multiplica $2$ por $1$ .

$a_{22} = - 1 (2 - (- 1 \cdot 2)) + 3 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} | + 0$

Paso 2.6.2.3.2.1.2

Multiplica $- (- 1 \cdot 2)$ .

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Paso 2.6.2.3.2.1.2.1

Multiplica $- 1$ por $2$ .

$a_{22} = - 1 (2 - - 2) + 3 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} | + 0$

Paso 2.6.2.3.2.1.2.2

Multiplica $- 1$ por $- 2$ .

$a_{22} = - 1 (2 + 2) + 3 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} | + 0$

Paso 2.6.2.3.2.2

Suma $2$ y $2$ .

$a_{22} = - 1 \cdot 4 + 3 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} | + 0$

Paso 2.6.2.4

Evalúa $| \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} |$ .

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Paso 2.6.2.4.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{22} = - 1 \cdot 4 + 3 (2 \cdot 2 - (- 1 \cdot 4)) + 0$

Paso 2.6.2.4.2

Simplifica el determinante.

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Paso 2.6.2.4.2.1

Simplifica cada término.

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Paso 2.6.2.4.2.1.1

Multiplica $2$ por $2$ .

$a_{22} = - 1 \cdot 4 + 3 (4 - (- 1 \cdot 4)) + 0$

Paso 2.6.2.4.2.1.2

Multiplica $- (- 1 \cdot 4)$ .

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Paso 2.6.2.4.2.1.2.1

Multiplica $- 1$ por $4$ .

$a_{22} = - 1 \cdot 4 + 3 (4 - - 4) + 0$

Paso 2.6.2.4.2.1.2.2

Multiplica $- 1$ por $- 4$ .

$a_{22} = - 1 \cdot 4 + 3 (4 + 4) + 0$

Paso 2.6.2.4.2.2

Suma $4$ y $4$ .

$a_{22} = - 1 \cdot 4 + 3 \cdot 8 + 0$

Paso 2.6.2.5

Simplifica el determinante.

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Paso 2.6.2.5.1

Simplifica cada término.

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Paso 2.6.2.5.1.1

Multiplica $- 1$ por $4$ .

$a_{22} = - 4 + 3 \cdot 8 + 0$

Paso 2.6.2.5.1.2

Multiplica $3$ por $8$ .

$a_{22} = - 4 + 24 + 0$

Paso 2.6.2.5.2

Suma $- 4$ y $24$ .

$a_{22} = 20 + 0$

Paso 2.6.2.5.3

Suma $20$ y $0$ .

$a_{22} = 20$

Paso 2.7

Calculate the minor for element $a_{23}$ .

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Paso 2.7.1

The minor for $a_{23}$ is the determinant with row $2$ and column $3$ deleted.

$| \begin{array}{c} 2 & 0 & 4 \\ 1 & - 1 & 2 \\ - 1 & 0 & 2 \end{array} |$

Paso 2.7.2

Evaluate the determinant.

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Paso 2.7.2.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in column $2$ by its cofactor and add.

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Paso 2.7.2.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Paso 2.7.2.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Paso 2.7.2.1.3

The minor for $a_{12}$ is the determinant with row $1$ and column $2$ deleted.

$| \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} |$

Paso 2.7.2.1.4

Multiply element $a_{12}$ by its cofactor.

$0 | \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} |$

Paso 2.7.2.1.5

The minor for $a_{22}$ is the determinant with row $2$ and column $2$ deleted.

$| \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} |$

Paso 2.7.2.1.6

Multiply element $a_{22}$ by its cofactor.

$- 1 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} |$

Paso 2.7.2.1.7

The minor for $a_{32}$ is the determinant with row $3$ and column $2$ deleted.

$| \begin{array}{c} 2 & 4 \\ 1 & 2 \end{array} |$

Paso 2.7.2.1.8

Multiply element $a_{32}$ by its cofactor.

$0 | \begin{array}{c} 2 & 4 \\ 1 & 2 \end{array} |$

Paso 2.7.2.1.9

Add the terms together.

$a_{23} = 0 | \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} | - 1 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} | + 0 | \begin{array}{c} 2 & 4 \\ 1 & 2 \end{array} |$

Paso 2.7.2.2

Multiplica $0$ por $| \begin{array}{c} 1 & 2 \\ - 1 & 2 \end{array} |$ .

$a_{23} = 0 - 1 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} | + 0 | \begin{array}{c} 2 & 4 \\ 1 & 2 \end{array} |$

Paso 2.7.2.3

Multiplica $0$ por $| \begin{array}{c} 2 & 4 \\ 1 & 2 \end{array} |$ .

$a_{23} = 0 - 1 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} | + 0$

Paso 2.7.2.4

Evalúa $| \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} |$ .

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Paso 2.7.2.4.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{23} = 0 - 1 (2 \cdot 2 - (- 1 \cdot 4)) + 0$

Paso 2.7.2.4.2

Simplifica el determinante.

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Paso 2.7.2.4.2.1

Simplifica cada término.

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Paso 2.7.2.4.2.1.1

Multiplica $2$ por $2$ .

$a_{23} = 0 - 1 (4 - (- 1 \cdot 4)) + 0$

Paso 2.7.2.4.2.1.2

Multiplica $- (- 1 \cdot 4)$ .

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Paso 2.7.2.4.2.1.2.1

Multiplica $- 1$ por $4$ .

$a_{23} = 0 - 1 (4 - - 4) + 0$

Paso 2.7.2.4.2.1.2.2

Multiplica $- 1$ por $- 4$ .

$a_{23} = 0 - 1 (4 + 4) + 0$

Paso 2.7.2.4.2.2

Suma $4$ y $4$ .

$a_{23} = 0 - 1 \cdot 8 + 0$

Paso 2.7.2.5

Simplifica el determinante.

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Paso 2.7.2.5.1

Multiplica $- 1$ por $8$ .

$a_{23} = 0 - 8 + 0$

Paso 2.7.2.5.2

Resta $8$ de $0$ .

$a_{23} = - 8 + 0$

Paso 2.7.2.5.3

Suma $- 8$ y $0$ .

$a_{23} = - 8$

Paso 2.8

Calculate the minor for element $a_{24}$ .

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Paso 2.8.1

The minor for $a_{24}$ is the determinant with row $2$ and column $4$ deleted.

$| \begin{array}{c} 2 & 0 & 1 \\ 1 & - 1 & 3 \\ - 1 & 0 & 0 \end{array} |$

Paso 2.8.2

Evaluate the determinant.

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Paso 2.8.2.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in column $2$ by its cofactor and add.

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Paso 2.8.2.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Paso 2.8.2.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Paso 2.8.2.1.3

The minor for $a_{12}$ is the determinant with row $1$ and column $2$ deleted.

$| \begin{array}{c} 1 & 3 \\ - 1 & 0 \end{array} |$

Paso 2.8.2.1.4

Multiply element $a_{12}$ by its cofactor.

$0 | \begin{array}{c} 1 & 3 \\ - 1 & 0 \end{array} |$

Paso 2.8.2.1.5

The minor for $a_{22}$ is the determinant with row $2$ and column $2$ deleted.

$| \begin{array}{c} 2 & 1 \\ - 1 & 0 \end{array} |$

Paso 2.8.2.1.6

Multiply element $a_{22}$ by its cofactor.

$- 1 | \begin{array}{c} 2 & 1 \\ - 1 & 0 \end{array} |$

Paso 2.8.2.1.7

The minor for $a_{32}$ is the determinant with row $3$ and column $2$ deleted.

$| \begin{array}{c} 2 & 1 \\ 1 & 3 \end{array} |$

Paso 2.8.2.1.8

Multiply element $a_{32}$ by its cofactor.

$0 | \begin{array}{c} 2 & 1 \\ 1 & 3 \end{array} |$

Paso 2.8.2.1.9

Add the terms together.

$a_{24} = 0 | \begin{array}{c} 1 & 3 \\ - 1 & 0 \end{array} | - 1 | \begin{array}{c} 2 & 1 \\ - 1 & 0 \end{array} | + 0 | \begin{array}{c} 2 & 1 \\ 1 & 3 \end{array} |$

Paso 2.8.2.2

Multiplica $0$ por $| \begin{array}{c} 1 & 3 \\ - 1 & 0 \end{array} |$ .

$a_{24} = 0 - 1 | \begin{array}{c} 2 & 1 \\ - 1 & 0 \end{array} | + 0 | \begin{array}{c} 2 & 1 \\ 1 & 3 \end{array} |$

Paso 2.8.2.3

Multiplica $0$ por $| \begin{array}{c} 2 & 1 \\ 1 & 3 \end{array} |$ .

$a_{24} = 0 - 1 | \begin{array}{c} 2 & 1 \\ - 1 & 0 \end{array} | + 0$

Paso 2.8.2.4

Evalúa $| \begin{array}{c} 2 & 1 \\ - 1 & 0 \end{array} |$ .

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Paso 2.8.2.4.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{24} = 0 - 1 (2 \cdot 0 - (- 1 \cdot 1)) + 0$

Paso 2.8.2.4.2

Simplifica el determinante.

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Paso 2.8.2.4.2.1

Simplifica cada término.

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Paso 2.8.2.4.2.1.1

Multiplica $2$ por $0$ .

$a_{24} = 0 - 1 (0 - (- 1 \cdot 1)) + 0$

Paso 2.8.2.4.2.1.2

Multiplica $- (- 1 \cdot 1)$ .

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Paso 2.8.2.4.2.1.2.1

Multiplica $- 1$ por $1$ .

$a_{24} = 0 - 1 (0 - - 1) + 0$

Paso 2.8.2.4.2.1.2.2

Multiplica $- 1$ por $- 1$ .

$a_{24} = 0 - 1 (0 + 1) + 0$

Paso 2.8.2.4.2.2

Suma $0$ y $1$ .

$a_{24} = 0 - 1 \cdot 1 + 0$

Paso 2.8.2.5

Simplifica el determinante.

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Paso 2.8.2.5.1

Multiplica $- 1$ por $1$ .

$a_{24} = 0 - 1 + 0$

Paso 2.8.2.5.2

Resta $1$ de $0$ .

$a_{24} = - 1 + 0$

Paso 2.8.2.5.3

Suma $- 1$ y $0$ .

$a_{24} = - 1$

Paso 2.9

Calculate the minor for element $a_{31}$ .

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Paso 2.9.1

The minor for $a_{31}$ is the determinant with row $3$ and column $1$ deleted.

$| \begin{array}{c} 0 & 1 & 4 \\ 1 & 0 & 0 \\ 0 & 0 & 2 \end{array} |$

Paso 2.9.2

Evaluate the determinant.

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Paso 2.9.2.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in column $1$ by its cofactor and add.

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Paso 2.9.2.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Paso 2.9.2.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Paso 2.9.2.1.3

The minor for $a_{11}$ is the determinant with row $1$ and column $1$ deleted.

$| \begin{array}{c} 0 & 0 \\ 0 & 2 \end{array} |$

Paso 2.9.2.1.4

Multiply element $a_{11}$ by its cofactor.

$0 | \begin{array}{c} 0 & 0 \\ 0 & 2 \end{array} |$

Paso 2.9.2.1.5

The minor for $a_{21}$ is the determinant with row $2$ and column $1$ deleted.

$| \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} |$

Paso 2.9.2.1.6

Multiply element $a_{21}$ by its cofactor.

$- 1 | \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} |$

Paso 2.9.2.1.7

The minor for $a_{31}$ is the determinant with row $3$ and column $1$ deleted.

$| \begin{array}{c} 1 & 4 \\ 0 & 0 \end{array} |$

Paso 2.9.2.1.8

Multiply element $a_{31}$ by its cofactor.

$0 | \begin{array}{c} 1 & 4 \\ 0 & 0 \end{array} |$

Paso 2.9.2.1.9

Add the terms together.

$a_{31} = 0 | \begin{array}{c} 0 & 0 \\ 0 & 2 \end{array} | - 1 | \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} | + 0 | \begin{array}{c} 1 & 4 \\ 0 & 0 \end{array} |$

Paso 2.9.2.2

Multiplica $0$ por $| \begin{array}{c} 0 & 0 \\ 0 & 2 \end{array} |$ .

$a_{31} = 0 - 1 | \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} | + 0 | \begin{array}{c} 1 & 4 \\ 0 & 0 \end{array} |$

Paso 2.9.2.3

Multiplica $0$ por $| \begin{array}{c} 1 & 4 \\ 0 & 0 \end{array} |$ .

$a_{31} = 0 - 1 | \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} | + 0$

Paso 2.9.2.4

Evalúa $| \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} |$ .

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Paso 2.9.2.4.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{31} = 0 - 1 (1 \cdot 2 + 0 \cdot 4) + 0$

Paso 2.9.2.4.2

Simplifica el determinante.

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Paso 2.9.2.4.2.1

Simplifica cada término.

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Paso 2.9.2.4.2.1.1

Multiplica $2$ por $1$ .

$a_{31} = 0 - 1 (2 + 0 \cdot 4) + 0$

Paso 2.9.2.4.2.1.2

Multiplica $0$ por $4$ .

$a_{31} = 0 - 1 (2 + 0) + 0$

Paso 2.9.2.4.2.2

Suma $2$ y $0$ .

$a_{31} = 0 - 1 \cdot 2 + 0$

Paso 2.9.2.5

Simplifica el determinante.

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Paso 2.9.2.5.1

Multiplica $- 1$ por $2$ .

$a_{31} = 0 - 2 + 0$

Paso 2.9.2.5.2

Resta $2$ de $0$ .

$a_{31} = - 2 + 0$

Paso 2.9.2.5.3

Suma $- 2$ y $0$ .

$a_{31} = - 2$

Paso 2.10

Calculate the minor for element $a_{32}$ .

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Paso 2.10.1

The minor for $a_{32}$ is the determinant with row $3$ and column $2$ deleted.

$| \begin{array}{c} 2 & 1 & 4 \\ - 2 & 0 & 0 \\ - 1 & 0 & 2 \end{array} |$

Paso 2.10.2

Evaluate the determinant.

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Paso 2.10.2.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in row $2$ by its cofactor and add.

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Paso 2.10.2.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Paso 2.10.2.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Paso 2.10.2.1.3

The minor for $a_{21}$ is the determinant with row $2$ and column $1$ deleted.

$| \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} |$

Paso 2.10.2.1.4

Multiply element $a_{21}$ by its cofactor.

$2 | \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} |$

Paso 2.10.2.1.5

The minor for $a_{22}$ is the determinant with row $2$ and column $2$ deleted.

$| \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} |$

Paso 2.10.2.1.6

Multiply element $a_{22}$ by its cofactor.

$0 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} |$

Paso 2.10.2.1.7

The minor for $a_{23}$ is the determinant with row $2$ and column $3$ deleted.

$| \begin{array}{c} 2 & 1 \\ - 1 & 0 \end{array} |$

Paso 2.10.2.1.8

Multiply element $a_{23}$ by its cofactor.

$0 | \begin{array}{c} 2 & 1 \\ - 1 & 0 \end{array} |$

Paso 2.10.2.1.9

Add the terms together.

$a_{32} = 2 | \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} | + 0 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} | + 0 | \begin{array}{c} 2 & 1 \\ - 1 & 0 \end{array} |$

Paso 2.10.2.2

Multiplica $0$ por $| \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} |$ .

$a_{32} = 2 | \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} | + 0 + 0 | \begin{array}{c} 2 & 1 \\ - 1 & 0 \end{array} |$

Paso 2.10.2.3

Multiplica $0$ por $| \begin{array}{c} 2 & 1 \\ - 1 & 0 \end{array} |$ .

$a_{32} = 2 | \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} | + 0 + 0$

Paso 2.10.2.4

Evalúa $| \begin{array}{c} 1 & 4 \\ 0 & 2 \end{array} |$ .

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Paso 2.10.2.4.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{32} = 2 (1 \cdot 2 + 0 \cdot 4) + 0 + 0$

Paso 2.10.2.4.2

Simplifica el determinante.

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Paso 2.10.2.4.2.1

Simplifica cada término.

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Paso 2.10.2.4.2.1.1

Multiplica $2$ por $1$ .

$a_{32} = 2 (2 + 0 \cdot 4) + 0 + 0$

Paso 2.10.2.4.2.1.2

Multiplica $0$ por $4$ .

$a_{32} = 2 (2 + 0) + 0 + 0$

Paso 2.10.2.4.2.2

Suma $2$ y $0$ .

$a_{32} = 2 \cdot 2 + 0 + 0$

Paso 2.10.2.5

Simplifica el determinante.

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Paso 2.10.2.5.1

Multiplica $2$ por $2$ .

$a_{32} = 4 + 0 + 0$

Paso 2.10.2.5.2

Suma $4$ y $0$ .

$a_{32} = 4 + 0$

Paso 2.10.2.5.3

Suma $4$ y $0$ .

$a_{32} = 4$

Paso 2.11

Calculate the minor for element $a_{33}$ .

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Paso 2.11.1

The minor for $a_{33}$ is the determinant with row $3$ and column $3$ deleted.

$| \begin{array}{c} 2 & 0 & 4 \\ - 2 & 1 & 0 \\ - 1 & 0 & 2 \end{array} |$

Paso 2.11.2

Evaluate the determinant.

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Paso 2.11.2.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in column $2$ by its cofactor and add.

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Paso 2.11.2.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Paso 2.11.2.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Paso 2.11.2.1.3

The minor for $a_{12}$ is the determinant with row $1$ and column $2$ deleted.

$| \begin{array}{c} - 2 & 0 \\ - 1 & 2 \end{array} |$

Paso 2.11.2.1.4

Multiply element $a_{12}$ by its cofactor.

$0 | \begin{array}{c} - 2 & 0 \\ - 1 & 2 \end{array} |$

Paso 2.11.2.1.5

The minor for $a_{22}$ is the determinant with row $2$ and column $2$ deleted.

$| \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} |$

Paso 2.11.2.1.6

Multiply element $a_{22}$ by its cofactor.

$1 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} |$

Paso 2.11.2.1.7

The minor for $a_{32}$ is the determinant with row $3$ and column $2$ deleted.

$| \begin{array}{c} 2 & 4 \\ - 2 & 0 \end{array} |$

Paso 2.11.2.1.8

Multiply element $a_{32}$ by its cofactor.

$0 | \begin{array}{c} 2 & 4 \\ - 2 & 0 \end{array} |$

Paso 2.11.2.1.9

Add the terms together.

$a_{33} = 0 | \begin{array}{c} - 2 & 0 \\ - 1 & 2 \end{array} | + 1 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} | + 0 | \begin{array}{c} 2 & 4 \\ - 2 & 0 \end{array} |$

Paso 2.11.2.2

Multiplica $0$ por $| \begin{array}{c} - 2 & 0 \\ - 1 & 2 \end{array} |$ .

$a_{33} = 0 + 1 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} | + 0 | \begin{array}{c} 2 & 4 \\ - 2 & 0 \end{array} |$

Paso 2.11.2.3

Multiplica $0$ por $| \begin{array}{c} 2 & 4 \\ - 2 & 0 \end{array} |$ .

$a_{33} = 0 + 1 | \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} | + 0$

Paso 2.11.2.4

Evalúa $| \begin{array}{c} 2 & 4 \\ - 1 & 2 \end{array} |$ .

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Paso 2.11.2.4.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{33} = 0 + 1 (2 \cdot 2 - (- 1 \cdot 4)) + 0$

Paso 2.11.2.4.2

Simplifica el determinante.

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Paso 2.11.2.4.2.1

Simplifica cada término.

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Paso 2.11.2.4.2.1.1

Multiplica $2$ por $2$ .

$a_{33} = 0 + 1 (4 - (- 1 \cdot 4)) + 0$

Paso 2.11.2.4.2.1.2

Multiplica $- (- 1 \cdot 4)$ .

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Paso 2.11.2.4.2.1.2.1

Multiplica $- 1$ por $4$ .

$a_{33} = 0 + 1 (4 - - 4) + 0$

Paso 2.11.2.4.2.1.2.2

Multiplica $- 1$ por $- 4$ .

$a_{33} = 0 + 1 (4 + 4) + 0$

Paso 2.11.2.4.2.2

Suma $4$ y $4$ .

$a_{33} = 0 + 1 \cdot 8 + 0$

Paso 2.11.2.5

Simplifica el determinante.

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Paso 2.11.2.5.1

Multiplica $8$ por $1$ .

$a_{33} = 0 + 8 + 0$

Paso 2.11.2.5.2

Suma $0$ y $8$ .

$a_{33} = 8 + 0$

Paso 2.11.2.5.3

Suma $8$ y $0$ .

$a_{33} = 8$

Paso 2.12

Calculate the minor for element $a_{34}$ .

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Paso 2.12.1

The minor for $a_{34}$ is the determinant with row $3$ and column $4$ deleted.

$| \begin{array}{c} 2 & 0 & 1 \\ - 2 & 1 & 0 \\ - 1 & 0 & 0 \end{array} |$

Paso 2.12.2

Evaluate the determinant.

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Paso 2.12.2.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in column $2$ by its cofactor and add.

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Paso 2.12.2.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Paso 2.12.2.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Paso 2.12.2.1.3

The minor for $a_{12}$ is the determinant with row $1$ and column $2$ deleted.

$| \begin{array}{c} - 2 & 0 \\ - 1 & 0 \end{array} |$

Paso 2.12.2.1.4

Multiply element $a_{12}$ by its cofactor.

$0 | \begin{array}{c} - 2 & 0 \\ - 1 & 0 \end{array} |$

Paso 2.12.2.1.5

The minor for $a_{22}$ is the determinant with row $2$ and column $2$ deleted.

$| \begin{array}{c} 2 & 1 \\ - 1 & 0 \end{array} |$

Paso 2.12.2.1.6

Multiply element $a_{22}$ by its cofactor.

$1 | \begin{array}{c} 2 & 1 \\ - 1 & 0 \end{array} |$

Paso 2.12.2.1.7

The minor for $a_{32}$ is the determinant with row $3$ and column $2$ deleted.

$| \begin{array}{c} 2 & 1 \\ - 2 & 0 \end{array} |$

Paso 2.12.2.1.8

Multiply element $a_{32}$ by its cofactor.

$0 | \begin{array}{c} 2 & 1 \\ - 2 & 0 \end{array} |$

Paso 2.12.2.1.9

Add the terms together.

$a_{34} = 0 | \begin{array}{c} - 2 & 0 \\ - 1 & 0 \end{array} | + 1 | \begin{array}{c} 2 & 1 \\ - 1 & 0 \end{array} | + 0 | \begin{array}{c} 2 & 1 \\ - 2 & 0 \end{array} |$

Paso 2.12.2.2

Multiplica $0$ por $| \begin{array}{c} - 2 & 0 \\ - 1 & 0 \end{array} |$ .

$a_{34} = 0 + 1 | \begin{array}{c} 2 & 1 \\ - 1 & 0 \end{array} | + 0 | \begin{array}{c} 2 & 1 \\ - 2 & 0 \end{array} |$

Paso 2.12.2.3

Multiplica $0$ por $| \begin{array}{c} 2 & 1 \\ - 2 & 0 \end{array} |$ .

$a_{34} = 0 + 1 | \begin{array}{c} 2 & 1 \\ - 1 & 0 \end{array} | + 0$

Paso 2.12.2.4

Evalúa $| \begin{array}{c} 2 & 1 \\ - 1 & 0 \end{array} |$ .

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Paso 2.12.2.4.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{34} = 0 + 1 (2 \cdot 0 - (- 1 \cdot 1)) + 0$

Paso 2.12.2.4.2

Simplifica el determinante.

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Paso 2.12.2.4.2.1

Simplifica cada término.

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Paso 2.12.2.4.2.1.1

Multiplica $2$ por $0$ .

$a_{34} = 0 + 1 (0 - (- 1 \cdot 1)) + 0$

Paso 2.12.2.4.2.1.2

Multiplica $- (- 1 \cdot 1)$ .

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Paso 2.12.2.4.2.1.2.1

Multiplica $- 1$ por $1$ .

$a_{34} = 0 + 1 (0 - - 1) + 0$

Paso 2.12.2.4.2.1.2.2

Multiplica $- 1$ por $- 1$ .

$a_{34} = 0 + 1 (0 + 1) + 0$

Paso 2.12.2.4.2.2

Suma $0$ y $1$ .

$a_{34} = 0 + 1 \cdot 1 + 0$

Paso 2.12.2.5

Simplifica el determinante.

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Paso 2.12.2.5.1

Multiplica $1$ por $1$ .

$a_{34} = 0 + 1 + 0$

Paso 2.12.2.5.2

Suma $0$ y $1$ .

$a_{34} = 1 + 0$

Paso 2.12.2.5.3

Suma $1$ y $0$ .

$a_{34} = 1$

Paso 2.13

Calculate the minor for element $a_{41}$ .

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Paso 2.13.1

The minor for $a_{41}$ is the determinant with row $4$ and column $1$ deleted.

$| \begin{array}{c} 0 & 1 & 4 \\ 1 & 0 & 0 \\ - 1 & 3 & 2 \end{array} |$

Paso 2.13.2

Evaluate the determinant.

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Paso 2.13.2.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in row $2$ by its cofactor and add.

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Paso 2.13.2.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Paso 2.13.2.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Paso 2.13.2.1.3

The minor for $a_{21}$ is the determinant with row $2$ and column $1$ deleted.

$| \begin{array}{c} 1 & 4 \\ 3 & 2 \end{array} |$

Paso 2.13.2.1.4

Multiply element $a_{21}$ by its cofactor.

$- 1 | \begin{array}{c} 1 & 4 \\ 3 & 2 \end{array} |$

Paso 2.13.2.1.5

The minor for $a_{22}$ is the determinant with row $2$ and column $2$ deleted.

$| \begin{array}{c} 0 & 4 \\ - 1 & 2 \end{array} |$

Paso 2.13.2.1.6

Multiply element $a_{22}$ by its cofactor.

$0 | \begin{array}{c} 0 & 4 \\ - 1 & 2 \end{array} |$

Paso 2.13.2.1.7

The minor for $a_{23}$ is the determinant with row $2$ and column $3$ deleted.

$| \begin{array}{c} 0 & 1 \\ - 1 & 3 \end{array} |$

Paso 2.13.2.1.8

Multiply element $a_{23}$ by its cofactor.

$0 | \begin{array}{c} 0 & 1 \\ - 1 & 3 \end{array} |$

Paso 2.13.2.1.9

Add the terms together.

$a_{41} = - 1 | \begin{array}{c} 1 & 4 \\ 3 & 2 \end{array} | + 0 | \begin{array}{c} 0 & 4 \\ - 1 & 2 \end{array} | + 0 | \begin{array}{c} 0 & 1 \\ - 1 & 3 \end{array} |$

Paso 2.13.2.2

Multiplica $0$ por $| \begin{array}{c} 0 & 4 \\ - 1 & 2 \end{array} |$ .

$a_{41} = - 1 | \begin{array}{c} 1 & 4 \\ 3 & 2 \end{array} | + 0 + 0 | \begin{array}{c} 0 & 1 \\ - 1 & 3 \end{array} |$

Paso 2.13.2.3

Multiplica $0$ por $| \begin{array}{c} 0 & 1 \\ - 1 & 3 \end{array} |$ .

$a_{41} = - 1 | \begin{array}{c} 1 & 4 \\ 3 & 2 \end{array} | + 0 + 0$

Paso 2.13.2.4

Evalúa $| \begin{array}{c} 1 & 4 \\ 3 & 2 \end{array} |$ .

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Paso 2.13.2.4.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{41} = - 1 (1 \cdot 2 - 3 \cdot 4) + 0 + 0$

Paso 2.13.2.4.2

Simplifica el determinante.

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Paso 2.13.2.4.2.1

Simplifica cada término.

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Paso 2.13.2.4.2.1.1

Multiplica $2$ por $1$ .

$a_{41} = - 1 (2 - 3 \cdot 4) + 0 + 0$

Paso 2.13.2.4.2.1.2

Multiplica $- 3$ por $4$ .

$a_{41} = - 1 (2 - 12) + 0 + 0$

Paso 2.13.2.4.2.2

Resta $12$ de $2$ .

$a_{41} = - 1 \cdot - 10 + 0 + 0$

Paso 2.13.2.5

Simplifica el determinante.

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Paso 2.13.2.5.1

Multiplica $- 1$ por $- 10$ .

$a_{41} = 10 + 0 + 0$

Paso 2.13.2.5.2

Suma $10$ y $0$ .

$a_{41} = 10 + 0$

Paso 2.13.2.5.3

Suma $10$ y $0$ .

$a_{41} = 10$

Paso 2.14

Calculate the minor for element $a_{42}$ .

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Paso 2.14.1

The minor for $a_{42}$ is the determinant with row $4$ and column $2$ deleted.

$| \begin{array}{c} 2 & 1 & 4 \\ - 2 & 0 & 0 \\ 1 & 3 & 2 \end{array} |$

Paso 2.14.2

Evaluate the determinant.

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Paso 2.14.2.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in row $2$ by its cofactor and add.

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Paso 2.14.2.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Paso 2.14.2.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Paso 2.14.2.1.3

The minor for $a_{21}$ is the determinant with row $2$ and column $1$ deleted.

$| \begin{array}{c} 1 & 4 \\ 3 & 2 \end{array} |$

Paso 2.14.2.1.4

Multiply element $a_{21}$ by its cofactor.

$2 | \begin{array}{c} 1 & 4 \\ 3 & 2 \end{array} |$

Paso 2.14.2.1.5

The minor for $a_{22}$ is the determinant with row $2$ and column $2$ deleted.

$| \begin{array}{c} 2 & 4 \\ 1 & 2 \end{array} |$

Paso 2.14.2.1.6

Multiply element $a_{22}$ by its cofactor.

$0 | \begin{array}{c} 2 & 4 \\ 1 & 2 \end{array} |$

Paso 2.14.2.1.7

The minor for $a_{23}$ is the determinant with row $2$ and column $3$ deleted.

$| \begin{array}{c} 2 & 1 \\ 1 & 3 \end{array} |$

Paso 2.14.2.1.8

Multiply element $a_{23}$ by its cofactor.

$0 | \begin{array}{c} 2 & 1 \\ 1 & 3 \end{array} |$

Paso 2.14.2.1.9

Add the terms together.

$a_{42} = 2 | \begin{array}{c} 1 & 4 \\ 3 & 2 \end{array} | + 0 | \begin{array}{c} 2 & 4 \\ 1 & 2 \end{array} | + 0 | \begin{array}{c} 2 & 1 \\ 1 & 3 \end{array} |$

Paso 2.14.2.2

Multiplica $0$ por $| \begin{array}{c} 2 & 4 \\ 1 & 2 \end{array} |$ .

$a_{42} = 2 | \begin{array}{c} 1 & 4 \\ 3 & 2 \end{array} | + 0 + 0 | \begin{array}{c} 2 & 1 \\ 1 & 3 \end{array} |$

Paso 2.14.2.3

Multiplica $0$ por $| \begin{array}{c} 2 & 1 \\ 1 & 3 \end{array} |$ .

$a_{42} = 2 | \begin{array}{c} 1 & 4 \\ 3 & 2 \end{array} | + 0 + 0$

Paso 2.14.2.4

Evalúa $| \begin{array}{c} 1 & 4 \\ 3 & 2 \end{array} |$ .

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Paso 2.14.2.4.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{42} = 2 (1 \cdot 2 - 3 \cdot 4) + 0 + 0$

Paso 2.14.2.4.2

Simplifica el determinante.

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Paso 2.14.2.4.2.1

Simplifica cada término.

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Paso 2.14.2.4.2.1.1

Multiplica $2$ por $1$ .

$a_{42} = 2 (2 - 3 \cdot 4) + 0 + 0$

Paso 2.14.2.4.2.1.2

Multiplica $- 3$ por $4$ .

$a_{42} = 2 (2 - 12) + 0 + 0$

Paso 2.14.2.4.2.2

Resta $12$ de $2$ .

$a_{42} = 2 \cdot - 10 + 0 + 0$

Paso 2.14.2.5

Simplifica el determinante.

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Paso 2.14.2.5.1

Multiplica $2$ por $- 10$ .

$a_{42} = - 20 + 0 + 0$

Paso 2.14.2.5.2

Suma $- 20$ y $0$ .

$a_{42} = - 20 + 0$

Paso 2.14.2.5.3

Suma $- 20$ y $0$ .

$a_{42} = - 20$

Paso 2.15

Calculate the minor for element $a_{43}$ .

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Paso 2.15.1

The minor for $a_{43}$ is the determinant with row $4$ and column $3$ deleted.

$| \begin{array}{c} 2 & 0 & 4 \\ - 2 & 1 & 0 \\ 1 & - 1 & 2 \end{array} |$

Paso 2.15.2

Evaluate the determinant.

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Paso 2.15.2.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in row $1$ by its cofactor and add.

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Paso 2.15.2.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Paso 2.15.2.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Paso 2.15.2.1.3

The minor for $a_{11}$ is the determinant with row $1$ and column $1$ deleted.

$| \begin{array}{c} 1 & 0 \\ - 1 & 2 \end{array} |$

Paso 2.15.2.1.4

Multiply element $a_{11}$ by its cofactor.

$2 | \begin{array}{c} 1 & 0 \\ - 1 & 2 \end{array} |$

Paso 2.15.2.1.5

The minor for $a_{12}$ is the determinant with row $1$ and column $2$ deleted.

$| \begin{array}{c} - 2 & 0 \\ 1 & 2 \end{array} |$

Paso 2.15.2.1.6

Multiply element $a_{12}$ by its cofactor.

$0 | \begin{array}{c} - 2 & 0 \\ 1 & 2 \end{array} |$

Paso 2.15.2.1.7

The minor for $a_{13}$ is the determinant with row $1$ and column $3$ deleted.

$| \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.15.2.1.8

Multiply element $a_{13}$ by its cofactor.

$4 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.15.2.1.9

Add the terms together.

$a_{43} = 2 | \begin{array}{c} 1 & 0 \\ - 1 & 2 \end{array} | + 0 | \begin{array}{c} - 2 & 0 \\ 1 & 2 \end{array} | + 4 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.15.2.2

Multiplica $0$ por $| \begin{array}{c} - 2 & 0 \\ 1 & 2 \end{array} |$ .

$a_{43} = 2 | \begin{array}{c} 1 & 0 \\ - 1 & 2 \end{array} | + 0 + 4 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.15.2.3

Evalúa $| \begin{array}{c} 1 & 0 \\ - 1 & 2 \end{array} |$ .

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Paso 2.15.2.3.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{43} = 2 (1 \cdot 2 - - 0) + 0 + 4 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.15.2.3.2

Simplifica el determinante.

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Paso 2.15.2.3.2.1

Simplifica cada término.

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Paso 2.15.2.3.2.1.1

Multiplica $2$ por $1$ .

$a_{43} = 2 (2 - - 0) + 0 + 4 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.15.2.3.2.1.2

Multiplica $- - 0$ .

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Paso 2.15.2.3.2.1.2.1

Multiplica $- 1$ por $0$ .

$a_{43} = 2 (2 - 0) + 0 + 4 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.15.2.3.2.1.2.2

Multiplica $- 1$ por $0$ .

$a_{43} = 2 (2 + 0) + 0 + 4 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.15.2.3.2.2

Suma $2$ y $0$ .

$a_{43} = 2 \cdot 2 + 0 + 4 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.15.2.4

Evalúa $| \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$ .

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Paso 2.15.2.4.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{43} = 2 \cdot 2 + 0 + 4 (- 2 \cdot - 1 - 1 \cdot 1)$

Paso 2.15.2.4.2

Simplifica el determinante.

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Paso 2.15.2.4.2.1

Simplifica cada término.

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Paso 2.15.2.4.2.1.1

Multiplica $- 2$ por $- 1$ .

$a_{43} = 2 \cdot 2 + 0 + 4 (2 - 1 \cdot 1)$

Paso 2.15.2.4.2.1.2

Multiplica $- 1$ por $1$ .

$a_{43} = 2 \cdot 2 + 0 + 4 (2 - 1)$

Paso 2.15.2.4.2.2

Resta $1$ de $2$ .

$a_{43} = 2 \cdot 2 + 0 + 4 \cdot 1$

Paso 2.15.2.5

Simplifica el determinante.

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Paso 2.15.2.5.1

Simplifica cada término.

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Paso 2.15.2.5.1.1

Multiplica $2$ por $2$ .

$a_{43} = 4 + 0 + 4 \cdot 1$

Paso 2.15.2.5.1.2

Multiplica $4$ por $1$ .

$a_{43} = 4 + 0 + 4$

Paso 2.15.2.5.2

Suma $4$ y $0$ .

$a_{43} = 4 + 4$

Paso 2.15.2.5.3

Suma $4$ y $4$ .

$a_{43} = 8$

Paso 2.16

Calculate the minor for element $a_{44}$ .

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Paso 2.16.1

The minor for $a_{44}$ is the determinant with row $4$ and column $4$ deleted.

$| \begin{array}{c} 2 & 0 & 1 \\ - 2 & 1 & 0 \\ 1 & - 1 & 3 \end{array} |$

Paso 2.16.2

Evaluate the determinant.

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Paso 2.16.2.1

Choose the row or column with the most $0$ elements. If there are no $0$ elements choose any row or column. Multiply every element in row $1$ by its cofactor and add.

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Paso 2.16.2.1.1

Consider the corresponding sign chart.

$| \begin{array}{c} + & - & + \\ - & + & - \\ + & - & + \end{array} |$

Paso 2.16.2.1.2

The cofactor is the minor with the sign changed if the indices match a $-$ position on the sign chart.

Paso 2.16.2.1.3

The minor for $a_{11}$ is the determinant with row $1$ and column $1$ deleted.

$| \begin{array}{c} 1 & 0 \\ - 1 & 3 \end{array} |$

Paso 2.16.2.1.4

Multiply element $a_{11}$ by its cofactor.

$2 | \begin{array}{c} 1 & 0 \\ - 1 & 3 \end{array} |$

Paso 2.16.2.1.5

The minor for $a_{12}$ is the determinant with row $1$ and column $2$ deleted.

$| \begin{array}{c} - 2 & 0 \\ 1 & 3 \end{array} |$

Paso 2.16.2.1.6

Multiply element $a_{12}$ by its cofactor.

$0 | \begin{array}{c} - 2 & 0 \\ 1 & 3 \end{array} |$

Paso 2.16.2.1.7

The minor for $a_{13}$ is the determinant with row $1$ and column $3$ deleted.

$| \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.16.2.1.8

Multiply element $a_{13}$ by its cofactor.

$1 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.16.2.1.9

Add the terms together.

$a_{44} = 2 | \begin{array}{c} 1 & 0 \\ - 1 & 3 \end{array} | + 0 | \begin{array}{c} - 2 & 0 \\ 1 & 3 \end{array} | + 1 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.16.2.2

Multiplica $0$ por $| \begin{array}{c} - 2 & 0 \\ 1 & 3 \end{array} |$ .

$a_{44} = 2 | \begin{array}{c} 1 & 0 \\ - 1 & 3 \end{array} | + 0 + 1 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.16.2.3

Evalúa $| \begin{array}{c} 1 & 0 \\ - 1 & 3 \end{array} |$ .

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Paso 2.16.2.3.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{44} = 2 (1 \cdot 3 - - 0) + 0 + 1 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.16.2.3.2

Simplifica el determinante.

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Paso 2.16.2.3.2.1

Simplifica cada término.

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Paso 2.16.2.3.2.1.1

Multiplica $3$ por $1$ .

$a_{44} = 2 (3 - - 0) + 0 + 1 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.16.2.3.2.1.2

Multiplica $- - 0$ .

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Paso 2.16.2.3.2.1.2.1

Multiplica $- 1$ por $0$ .

$a_{44} = 2 (3 - 0) + 0 + 1 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.16.2.3.2.1.2.2

Multiplica $- 1$ por $0$ .

$a_{44} = 2 (3 + 0) + 0 + 1 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.16.2.3.2.2

Suma $3$ y $0$ .

$a_{44} = 2 \cdot 3 + 0 + 1 | \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$

Paso 2.16.2.4

Evalúa $| \begin{array}{c} - 2 & 1 \\ 1 & - 1 \end{array} |$ .

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Paso 2.16.2.4.1

El determinante de una matriz $2 \times 2$ puede obtenerse usando la fórmula $| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$a_{44} = 2 \cdot 3 + 0 + 1 (- 2 \cdot - 1 - 1 \cdot 1)$

Paso 2.16.2.4.2

Simplifica el determinante.

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Paso 2.16.2.4.2.1

Simplifica cada término.

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Paso 2.16.2.4.2.1.1

Multiplica $- 2$ por $- 1$ .

$a_{44} = 2 \cdot 3 + 0 + 1 (2 - 1 \cdot 1)$

Paso 2.16.2.4.2.1.2

Multiplica $- 1$ por $1$ .

$a_{44} = 2 \cdot 3 + 0 + 1 (2 - 1)$

Paso 2.16.2.4.2.2

Resta $1$ de $2$ .

$a_{44} = 2 \cdot 3 + 0 + 1 \cdot 1$

Paso 2.16.2.5

Simplifica el determinante.

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Paso 2.16.2.5.1

Simplifica cada término.

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Paso 2.16.2.5.1.1

Multiplica $2$ por $3$ .

$a_{44} = 6 + 0 + 1 \cdot 1$

Paso 2.16.2.5.1.2

Multiplica $1$ por $1$ .

$a_{44} = 6 + 0 + 1$

Paso 2.16.2.5.2

Suma $6$ y $0$ .

$a_{44} = 6 + 1$

Paso 2.16.2.5.3

Suma $6$ y $1$ .

$a_{44} = 7$

Paso 2.17

The cofactor matrix is a matrix of the minors with the sign changed for the elements in the $-$ positions on the sign chart.

$[\begin{array}{c} 6 & 12 & 0 & 3 \\ - 2 & 20 & 8 & - 1 \\ - 2 & - 4 & 8 & - 1 \\ - 10 & - 20 & - 8 & 7 \end{array}]$

Paso 3

Transpose the matrix by switching its rows to columns.

$[\begin{array}{c} 6 & - 2 & - 2 & - 10 \\ 12 & 20 & - 4 & - 20 \\ 0 & 8 & 8 & - 8 \\ 3 & - 1 & - 1 & 7 \end{array}]$