Matemática discreta Exemplos

$[\begin{array}{c} 1 & 4 & 5 & 0 \\ 0 & 2 & 1 & 3 \\ 2 & 5 & 4 & 1 \\ 1 & 5 & 0 & 2 \end{array}]$

Etapa 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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Etapa 1.1

Consider the corresponding sign chart.

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

Etapa 1.2

The cofactor is the minor with the sign changed if the indices match a

$-$ position on the sign chart.

Etapa 1.3

The minor for

$a_{11}$ is the determinant with row

$1$ and column

$1$ deleted.

$| \begin{array}{c} 2 & 1 & 3 \\ 5 & 4 & 1 \\ 5 & 0 & 2 \end{array} |$

Etapa 1.4

Multiply element

$a_{11}$ by its cofactor.

$1 | \begin{array}{c} 2 & 1 & 3 \\ 5 & 4 & 1 \\ 5 & 0 & 2 \end{array} |$

Etapa 1.5

The minor for

$a_{12}$ is the determinant with row

$1$ and column

$2$ deleted.

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

Etapa 1.6

Multiply element

$a_{12}$ by its cofactor.

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

Etapa 1.7

The minor for

$a_{13}$ is the determinant with row

$1$ and column

$3$ deleted.

$| \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} |$

Etapa 1.8

Multiply element

$a_{13}$ by its cofactor.

$5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} |$

Etapa 1.9

The minor for

$a_{14}$ is the determinant with row

$1$ and column

$4$ deleted.

$| \begin{array}{c} 0 & 2 & 1 \\ 2 & 5 & 4 \\ 1 & 5 & 0 \end{array} |$

Etapa 1.10

Multiply element

$a_{14}$ by its cofactor.

$0 | \begin{array}{c} 0 & 2 & 1 \\ 2 & 5 & 4 \\ 1 & 5 & 0 \end{array} |$

Etapa 1.11

Add the terms together.

$1 | \begin{array}{c} 2 & 1 & 3 \\ 5 & 4 & 1 \\ 5 & 0 & 2 \end{array} | - 4 | \begin{array}{c} 0 & 1 & 3 \\ 2 & 4 & 1 \\ 1 & 0 & 2 \end{array} | + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0 | \begin{array}{c} 0 & 2 & 1 \\ 2 & 5 & 4 \\ 1 & 5 & 0 \end{array} |$

Etapa 2

Multiplique

$0$ por

$| \begin{array}{c} 0 & 2 & 1 \\ 2 & 5 & 4 \\ 1 & 5 & 0 \end{array} |$ .

Etapa 3

Avalie

$| \begin{array}{c} 2 & 1 & 3 \\ 5 & 4 & 1 \\ 5 & 0 & 2 \end{array} |$ .

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Etapa 3.1

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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Etapa 3.1.1

Consider the corresponding sign chart.

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

Etapa 3.1.2

The cofactor is the minor with the sign changed if the indices match a

$-$ position on the sign chart.

Etapa 3.1.3

The minor for

$a_{12}$ is the determinant with row

$1$ and column

$2$ deleted.

$| \begin{array}{c} 5 & 1 \\ 5 & 2 \end{array} |$

Etapa 3.1.4

Multiply element

$a_{12}$ by its cofactor.

$- 1 | \begin{array}{c} 5 & 1 \\ 5 & 2 \end{array} |$

Etapa 3.1.5

The minor for

$a_{22}$ is the determinant with row

$2$ and column

$2$ deleted.

$| \begin{array}{c} 2 & 3 \\ 5 & 2 \end{array} |$

Etapa 3.1.6

Multiply element

$a_{22}$ by its cofactor.

$4 | \begin{array}{c} 2 & 3 \\ 5 & 2 \end{array} |$

Etapa 3.1.7

The minor for

$a_{32}$ is the determinant with row

$3$ and column

$2$ deleted.

$| \begin{array}{c} 2 & 3 \\ 5 & 1 \end{array} |$

Etapa 3.1.8

Multiply element

$a_{32}$ by its cofactor.

$0 | \begin{array}{c} 2 & 3 \\ 5 & 1 \end{array} |$

Etapa 3.1.9

Add the terms together.

$1 (- 1 | \begin{array}{c} 5 & 1 \\ 5 & 2 \end{array} | + 4 | \begin{array}{c} 2 & 3 \\ 5 & 2 \end{array} | + 0 | \begin{array}{c} 2 & 3 \\ 5 & 1 \end{array} |) - 4 | \begin{array}{c} 0 & 1 & 3 \\ 2 & 4 & 1 \\ 1 & 0 & 2 \end{array} | + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 3.2

Multiplique

$0$ por

$| \begin{array}{c} 2 & 3 \\ 5 & 1 \end{array} |$ .

$1 (- 1 | \begin{array}{c} 5 & 1 \\ 5 & 2 \end{array} | + 4 | \begin{array}{c} 2 & 3 \\ 5 & 2 \end{array} | + 0) - 4 | \begin{array}{c} 0 & 1 & 3 \\ 2 & 4 & 1 \\ 1 & 0 & 2 \end{array} | + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 3.3

Avalie

$| \begin{array}{c} 5 & 1 \\ 5 & 2 \end{array} |$ .

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Etapa 3.3.1

O determinante de uma matriz

$2 \times 2$ pode ser encontrado ao usar a fórmula

$| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$1 (- 1 (5 \cdot 2 - 5 \cdot 1) + 4 | \begin{array}{c} 2 & 3 \\ 5 & 2 \end{array} | + 0) - 4 | \begin{array}{c} 0 & 1 & 3 \\ 2 & 4 & 1 \\ 1 & 0 & 2 \end{array} | + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 3.3.2

Simplifique o determinante.

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Etapa 3.3.2.1

Simplifique cada termo.

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Etapa 3.3.2.1.1

Multiplique

$5$ por

$2$ .

$1 (- 1 (10 - 5 \cdot 1) + 4 | \begin{array}{c} 2 & 3 \\ 5 & 2 \end{array} | + 0) - 4 | \begin{array}{c} 0 & 1 & 3 \\ 2 & 4 & 1 \\ 1 & 0 & 2 \end{array} | + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 3.3.2.1.2

Multiplique

$- 5$ por

$1$ .

$1 (- 1 (10 - 5) + 4 | \begin{array}{c} 2 & 3 \\ 5 & 2 \end{array} | + 0) - 4 | \begin{array}{c} 0 & 1 & 3 \\ 2 & 4 & 1 \\ 1 & 0 & 2 \end{array} | + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 3.3.2.2

Subtraia

$5$ de

$10$ .

$1 (- 1 \cdot 5 + 4 | \begin{array}{c} 2 & 3 \\ 5 & 2 \end{array} | + 0) - 4 | \begin{array}{c} 0 & 1 & 3 \\ 2 & 4 & 1 \\ 1 & 0 & 2 \end{array} | + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 3.4

Avalie

$| \begin{array}{c} 2 & 3 \\ 5 & 2 \end{array} |$ .

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Etapa 3.4.1

O determinante de uma matriz

$2 \times 2$ pode ser encontrado ao usar a fórmula

$| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$1 (- 1 \cdot 5 + 4 (2 \cdot 2 - 5 \cdot 3) + 0) - 4 | \begin{array}{c} 0 & 1 & 3 \\ 2 & 4 & 1 \\ 1 & 0 & 2 \end{array} | + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 3.4.2

Simplifique o determinante.

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Etapa 3.4.2.1

Simplifique cada termo.

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Etapa 3.4.2.1.1

Multiplique

$2$ por

$2$ .

$1 (- 1 \cdot 5 + 4 (4 - 5 \cdot 3) + 0) - 4 | \begin{array}{c} 0 & 1 & 3 \\ 2 & 4 & 1 \\ 1 & 0 & 2 \end{array} | + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 3.4.2.1.2

Multiplique

$- 5$ por

$3$ .

$1 (- 1 \cdot 5 + 4 (4 - 15) + 0) - 4 | \begin{array}{c} 0 & 1 & 3 \\ 2 & 4 & 1 \\ 1 & 0 & 2 \end{array} | + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 3.4.2.2

Subtraia

$15$ de

$4$ .

$1 (- 1 \cdot 5 + 4 \cdot - 11 + 0) - 4 | \begin{array}{c} 0 & 1 & 3 \\ 2 & 4 & 1 \\ 1 & 0 & 2 \end{array} | + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 3.5

Simplifique o determinante.

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Etapa 3.5.1

Simplifique cada termo.

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Etapa 3.5.1.1

Multiplique

$- 1$ por

$5$ .

$1 (- 5 + 4 \cdot - 11 + 0) - 4 | \begin{array}{c} 0 & 1 & 3 \\ 2 & 4 & 1 \\ 1 & 0 & 2 \end{array} | + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 3.5.1.2

Multiplique

$4$ por

$- 11$ .

$1 (- 5 - 44 + 0) - 4 | \begin{array}{c} 0 & 1 & 3 \\ 2 & 4 & 1 \\ 1 & 0 & 2 \end{array} | + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 3.5.2

Subtraia

$44$ de

$- 5$ .

$1 (- 49 + 0) - 4 | \begin{array}{c} 0 & 1 & 3 \\ 2 & 4 & 1 \\ 1 & 0 & 2 \end{array} | + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 3.5.3

Some

$- 49$ e

$0$ .

$1 \cdot - 49 - 4 | \begin{array}{c} 0 & 1 & 3 \\ 2 & 4 & 1 \\ 1 & 0 & 2 \end{array} | + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 4

Avalie

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

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Etapa 4.1

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.

Toque para ver mais passagens...

Etapa 4.1.1

Consider the corresponding sign chart.

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

Etapa 4.1.2

The cofactor is the minor with the sign changed if the indices match a

$-$ position on the sign chart.

Etapa 4.1.3

The minor for

$a_{11}$ is the determinant with row

$1$ and column

$1$ deleted.

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

Etapa 4.1.4

Multiply element

$a_{11}$ by its cofactor.

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

Etapa 4.1.5

The minor for

$a_{12}$ is the determinant with row

$1$ and column

$2$ deleted.

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

Etapa 4.1.6

Multiply element

$a_{12}$ by its cofactor.

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

Etapa 4.1.7

The minor for

$a_{13}$ is the determinant with row

$1$ and column

$3$ deleted.

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

Etapa 4.1.8

Multiply element

$a_{13}$ by its cofactor.

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

Etapa 4.1.9

Add the terms together.

$1 \cdot - 49 - 4 (0 | \begin{array}{c} 4 & 1 \\ 0 & 2 \end{array} | - 1 | \begin{array}{c} 2 & 1 \\ 1 & 2 \end{array} | + 3 | \begin{array}{c} 2 & 4 \\ 1 & 0 \end{array} |) + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 4.2

Multiplique

$0$ por

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

$1 \cdot - 49 - 4 (0 - 1 | \begin{array}{c} 2 & 1 \\ 1 & 2 \end{array} | + 3 | \begin{array}{c} 2 & 4 \\ 1 & 0 \end{array} |) + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 4.3

Avalie

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

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Etapa 4.3.1

O determinante de uma matriz

$2 \times 2$ pode ser encontrado ao usar a fórmula

$| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$1 \cdot - 49 - 4 (0 - 1 (2 \cdot 2 - 1 \cdot 1) + 3 | \begin{array}{c} 2 & 4 \\ 1 & 0 \end{array} |) + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 4.3.2

Simplifique o determinante.

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Etapa 4.3.2.1

Simplifique cada termo.

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Etapa 4.3.2.1.1

Multiplique

$2$ por

$2$ .

$1 \cdot - 49 - 4 (0 - 1 (4 - 1 \cdot 1) + 3 | \begin{array}{c} 2 & 4 \\ 1 & 0 \end{array} |) + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 4.3.2.1.2

Multiplique

$- 1$ por

$1$ .

$1 \cdot - 49 - 4 (0 - 1 (4 - 1) + 3 | \begin{array}{c} 2 & 4 \\ 1 & 0 \end{array} |) + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 4.3.2.2

Subtraia

$1$ de

$4$ .

$1 \cdot - 49 - 4 (0 - 1 \cdot 3 + 3 | \begin{array}{c} 2 & 4 \\ 1 & 0 \end{array} |) + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 4.4

Avalie

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

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Etapa 4.4.1

O determinante de uma matriz

$2 \times 2$ pode ser encontrado ao usar a fórmula

$| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$1 \cdot - 49 - 4 (0 - 1 \cdot 3 + 3 (2 \cdot 0 - 1 \cdot 4)) + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 4.4.2

Simplifique o determinante.

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Etapa 4.4.2.1

Simplifique cada termo.

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Etapa 4.4.2.1.1

Multiplique

$2$ por

$0$ .

$1 \cdot - 49 - 4 (0 - 1 \cdot 3 + 3 (0 - 1 \cdot 4)) + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 4.4.2.1.2

Multiplique

$- 1$ por

$4$ .

$1 \cdot - 49 - 4 (0 - 1 \cdot 3 + 3 (0 - 4)) + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 4.4.2.2

Subtraia

$4$ de

$0$ .

$1 \cdot - 49 - 4 (0 - 1 \cdot 3 + 3 \cdot - 4) + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 4.5

Simplifique o determinante.

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Etapa 4.5.1

Simplifique cada termo.

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Etapa 4.5.1.1

Multiplique

$- 1$ por

$3$ .

$1 \cdot - 49 - 4 (0 - 3 + 3 \cdot - 4) + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 4.5.1.2

Multiplique

$3$ por

$- 4$ .

$1 \cdot - 49 - 4 (0 - 3 - 12) + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 4.5.2

Subtraia

$3$ de

$0$ .

$1 \cdot - 49 - 4 (- 3 - 12) + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 4.5.3

Subtraia

$12$ de

$- 3$ .

$1 \cdot - 49 - 4 \cdot - 15 + 5 | \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} | + 0$

Etapa 5

Avalie

$| \begin{array}{c} 0 & 2 & 3 \\ 2 & 5 & 1 \\ 1 & 5 & 2 \end{array} |$ .

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Etapa 5.1

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.

Toque para ver mais passagens...

Etapa 5.1.1

Consider the corresponding sign chart.

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

Etapa 5.1.2

The cofactor is the minor with the sign changed if the indices match a

$-$ position on the sign chart.

Etapa 5.1.3

The minor for

$a_{11}$ is the determinant with row

$1$ and column

$1$ deleted.

$| \begin{array}{c} 5 & 1 \\ 5 & 2 \end{array} |$

Etapa 5.1.4

Multiply element

$a_{11}$ by its cofactor.

$0 | \begin{array}{c} 5 & 1 \\ 5 & 2 \end{array} |$

Etapa 5.1.5

The minor for

$a_{12}$ is the determinant with row

$1$ and column

$2$ deleted.

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

Etapa 5.1.6

Multiply element

$a_{12}$ by its cofactor.

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

Etapa 5.1.7

The minor for

$a_{13}$ is the determinant with row

$1$ and column

$3$ deleted.

$| \begin{array}{c} 2 & 5 \\ 1 & 5 \end{array} |$

Etapa 5.1.8

Multiply element

$a_{13}$ by its cofactor.

$3 | \begin{array}{c} 2 & 5 \\ 1 & 5 \end{array} |$

Etapa 5.1.9

Add the terms together.

$1 \cdot - 49 - 4 \cdot - 15 + 5 (0 | \begin{array}{c} 5 & 1 \\ 5 & 2 \end{array} | - 2 | \begin{array}{c} 2 & 1 \\ 1 & 2 \end{array} | + 3 | \begin{array}{c} 2 & 5 \\ 1 & 5 \end{array} |) + 0$

Etapa 5.2

Multiplique

$0$ por

$| \begin{array}{c} 5 & 1 \\ 5 & 2 \end{array} |$ .

$1 \cdot - 49 - 4 \cdot - 15 + 5 (0 - 2 | \begin{array}{c} 2 & 1 \\ 1 & 2 \end{array} | + 3 | \begin{array}{c} 2 & 5 \\ 1 & 5 \end{array} |) + 0$

Etapa 5.3

Avalie

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

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Etapa 5.3.1

O determinante de uma matriz

$2 \times 2$ pode ser encontrado ao usar a fórmula

$| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$1 \cdot - 49 - 4 \cdot - 15 + 5 (0 - 2 (2 \cdot 2 - 1 \cdot 1) + 3 | \begin{array}{c} 2 & 5 \\ 1 & 5 \end{array} |) + 0$

Etapa 5.3.2

Simplifique o determinante.

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Etapa 5.3.2.1

Simplifique cada termo.

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Etapa 5.3.2.1.1

Multiplique

$2$ por

$2$ .

$1 \cdot - 49 - 4 \cdot - 15 + 5 (0 - 2 (4 - 1 \cdot 1) + 3 | \begin{array}{c} 2 & 5 \\ 1 & 5 \end{array} |) + 0$

Etapa 5.3.2.1.2

Multiplique

$- 1$ por

$1$ .

$1 \cdot - 49 - 4 \cdot - 15 + 5 (0 - 2 (4 - 1) + 3 | \begin{array}{c} 2 & 5 \\ 1 & 5 \end{array} |) + 0$

Etapa 5.3.2.2

Subtraia

$1$ de

$4$ .

$1 \cdot - 49 - 4 \cdot - 15 + 5 (0 - 2 \cdot 3 + 3 | \begin{array}{c} 2 & 5 \\ 1 & 5 \end{array} |) + 0$

Etapa 5.4

Avalie

$| \begin{array}{c} 2 & 5 \\ 1 & 5 \end{array} |$ .

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Etapa 5.4.1

O determinante de uma matriz

$2 \times 2$ pode ser encontrado ao usar a fórmula

$| \begin{array}{c} a & b \\ c & d \end{array} | = a d - c b$ .

$1 \cdot - 49 - 4 \cdot - 15 + 5 (0 - 2 \cdot 3 + 3 (2 \cdot 5 - 1 \cdot 5)) + 0$

Etapa 5.4.2

Simplifique o determinante.

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Etapa 5.4.2.1

Simplifique cada termo.

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Etapa 5.4.2.1.1

Multiplique

$2$ por

$5$ .

$1 \cdot - 49 - 4 \cdot - 15 + 5 (0 - 2 \cdot 3 + 3 (10 - 1 \cdot 5)) + 0$

Etapa 5.4.2.1.2

Multiplique

$- 1$ por

$5$ .

$1 \cdot - 49 - 4 \cdot - 15 + 5 (0 - 2 \cdot 3 + 3 (10 - 5)) + 0$

Etapa 5.4.2.2

Subtraia

$5$ de

$10$ .

$1 \cdot - 49 - 4 \cdot - 15 + 5 (0 - 2 \cdot 3 + 3 \cdot 5) + 0$

Etapa 5.5

Simplifique o determinante.

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Etapa 5.5.1

Simplifique cada termo.

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Etapa 5.5.1.1

Multiplique

$- 2$ por

$3$ .

$1 \cdot - 49 - 4 \cdot - 15 + 5 (0 - 6 + 3 \cdot 5) + 0$

Etapa 5.5.1.2

Multiplique

$3$ por

$5$ .

$1 \cdot - 49 - 4 \cdot - 15 + 5 (0 - 6 + 15) + 0$

Etapa 5.5.2

Subtraia

$6$ de

$0$ .

$1 \cdot - 49 - 4 \cdot - 15 + 5 (- 6 + 15) + 0$

Etapa 5.5.3

Some

$- 6$ e

$15$ .

$1 \cdot - 49 - 4 \cdot - 15 + 5 \cdot 9 + 0$

Etapa 6

Simplifique o determinante.

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Etapa 6.1

Simplifique cada termo.

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Etapa 6.1.1

Multiplique

$- 49$ por

$1$ .

$- 49 - 4 \cdot - 15 + 5 \cdot 9 + 0$

Etapa 6.1.2

Multiplique

$- 4$ por

$- 15$ .

$- 49 + 60 + 5 \cdot 9 + 0$

Etapa 6.1.3

Multiplique

$5$ por

$9$ .

$- 49 + 60 + 45 + 0$

Etapa 6.2

Some

$- 49$ e

$60$ .

$11 + 45 + 0$

Etapa 6.3

Some

$11$ e

$45$ .

$56 + 0$

Etapa 6.4

Some

$56$ e

$0$ .

$56$

Insira SEU problema