Aljabar Linear Contoh

[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = 4 \cdot [\begin{array}{c} - 1 & - 5 \\ - 6 & 4 \\ - 8 & 1 \end{array}]

$[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = 4 \cdot [\begin{array}{c} - 1 & - 5 \\ - 6 & 4 \\ - 8 & 1 \end{array}]$

Langkah 1

Kalikan

4

$4$ dengan setiap elemen di dalam matriks tersebut.

[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = [\begin{array}{c} 4 \cdot - 1 & 4 \cdot - 5 \\ 4 \cdot - 6 & 4 \cdot 4 \\ 4 \cdot - 8 & 4 \cdot 1 \end{array}]

$[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = [\begin{array}{c} 4 \cdot - 1 & 4 \cdot - 5 \\ 4 \cdot - 6 & 4 \cdot 4 \\ 4 \cdot - 8 & 4 \cdot 1 \end{array}]$

Langkah 2

Sederhanakan setiap elemen dalam matriks.

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Langkah 2.1

Kalikan

4

$4$ dengan

- 1

$- 1$ .

[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = [\begin{array}{c} - 4 & 4 \cdot - 5 \\ 4 \cdot - 6 & 4 \cdot 4 \\ 4 \cdot - 8 & 4 \cdot 1 \end{array}]

$[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = [\begin{array}{c} - 4 & 4 \cdot - 5 \\ 4 \cdot - 6 & 4 \cdot 4 \\ 4 \cdot - 8 & 4 \cdot 1 \end{array}]$

Langkah 2.2

Kalikan

4

$4$ dengan

- 5

$- 5$ .

[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = [\begin{array}{c} - 4 & - 20 \\ 4 \cdot - 6 & 4 \cdot 4 \\ 4 \cdot - 8 & 4 \cdot 1 \end{array}]

$[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = [\begin{array}{c} - 4 & - 20 \\ 4 \cdot - 6 & 4 \cdot 4 \\ 4 \cdot - 8 & 4 \cdot 1 \end{array}]$

Langkah 2.3

Kalikan

4

$4$ dengan

- 6

$- 6$ .

[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = [\begin{array}{c} - 4 & - 20 \\ - 24 & 4 \cdot 4 \\ 4 \cdot - 8 & 4 \cdot 1 \end{array}]

$[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = [\begin{array}{c} - 4 & - 20 \\ - 24 & 4 \cdot 4 \\ 4 \cdot - 8 & 4 \cdot 1 \end{array}]$

Langkah 2.4

Kalikan

4

$4$ dengan

4

$4$ .

[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = [\begin{array}{c} - 4 & - 20 \\ - 24 & 16 \\ 4 \cdot - 8 & 4 \cdot 1 \end{array}]

$[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = [\begin{array}{c} - 4 & - 20 \\ - 24 & 16 \\ 4 \cdot - 8 & 4 \cdot 1 \end{array}]$

Langkah 2.5

Kalikan

4

$4$ dengan

- 8

$- 8$ .

[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = [\begin{array}{c} - 4 & - 20 \\ - 24 & 16 \\ - 32 & 4 \cdot 1 \end{array}]

$[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = [\begin{array}{c} - 4 & - 20 \\ - 24 & 16 \\ - 32 & 4 \cdot 1 \end{array}]$

Langkah 2.6

Kalikan

4

$4$ dengan

1

$1$ .

[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = [\begin{array}{c} - 4 & - 20 \\ - 24 & 16 \\ - 32 & 4 \end{array}]

$[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = [\begin{array}{c} - 4 & - 20 \\ - 24 & 16 \\ - 32 & 4 \end{array}]$

[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = [\begin{array}{c} - 4 & - 20 \\ - 24 & 16 \\ - 32 & 4 \end{array}]

$[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}] - x = [\begin{array}{c} - 4 & - 20 \\ - 24 & 16 \\ - 32 & 4 \end{array}]$

Langkah 3

Move all terms not containing a variable to the right side.

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Langkah 3.1

Kurangkan

[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}]

$[\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}]$ dari kedua sisi persamaan tersebut.

- x = [\begin{array}{c} - 4 & - 20 \\ - 24 & 16 \\ - 32 & 4 \end{array}] - [\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}]

$- x = [\begin{array}{c} - 4 & - 20 \\ - 24 & 16 \\ - 32 & 4 \end{array}] - [\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}]$

- x = [\begin{array}{c} - 4 & - 20 \\ - 24 & 16 \\ - 32 & 4 \end{array}] - [\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}]

$- x = [\begin{array}{c} - 4 & - 20 \\ - 24 & 16 \\ - 32 & 4 \end{array}] - [\begin{array}{c} 8 & - 7 \\ 5 & 7 \\ 9 & - 7 \end{array}]$

Langkah 4

Sederhanakan sisi kanannya.

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Langkah 4.1

Kurangkan elemen yang seletak.

- x = [\begin{array}{c} - 4 - 8 & - 20 + 7 \\ - 24 - 5 & 16 - 7 \\ - 32 - 9 & 4 + 7 \end{array}]

$- x = [\begin{array}{c} - 4 - 8 & - 20 + 7 \\ - 24 - 5 & 16 - 7 \\ - 32 - 9 & 4 + 7 \end{array}]$

Langkah 4.2

Simplify each element.

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Langkah 4.2.1

Kurangi

8

$8$ dengan

- 4

$- 4$ .

- x = [\begin{array}{c} - 12 & - 20 + 7 \\ - 24 - 5 & 16 - 7 \\ - 32 - 9 & 4 + 7 \end{array}]

$- x = [\begin{array}{c} - 12 & - 20 + 7 \\ - 24 - 5 & 16 - 7 \\ - 32 - 9 & 4 + 7 \end{array}]$

Langkah 4.2.2

Tambahkan

- 20

$- 20$ dan

7

$7$ .

- x = [\begin{array}{c} - 12 & - 13 \\ - 24 - 5 & 16 - 7 \\ - 32 - 9 & 4 + 7 \end{array}]

$- x = [\begin{array}{c} - 12 & - 13 \\ - 24 - 5 & 16 - 7 \\ - 32 - 9 & 4 + 7 \end{array}]$

Langkah 4.2.3

Kurangi

5

$5$ dengan

- 24

$- 24$ .

- x = [\begin{array}{c} - 12 & - 13 \\ - 29 & 16 - 7 \\ - 32 - 9 & 4 + 7 \end{array}]

$- x = [\begin{array}{c} - 12 & - 13 \\ - 29 & 16 - 7 \\ - 32 - 9 & 4 + 7 \end{array}]$

Langkah 4.2.4

Kurangi

7

$7$ dengan

16

$16$ .

- x = [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 32 - 9 & 4 + 7 \end{array}]

$- x = [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 32 - 9 & 4 + 7 \end{array}]$

Langkah 4.2.5

Kurangi

9

$9$ dengan

- 32

$- 32$ .

- x = [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 41 & 4 + 7 \end{array}]

$- x = [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 41 & 4 + 7 \end{array}]$

Langkah 4.2.6

Tambahkan

4

$4$ dan

7

$7$ .

- x = [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 41 & 11 \end{array}]

$- x = [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 41 & 11 \end{array}]$

- x = [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 41 & 11 \end{array}]

$- x = [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 41 & 11 \end{array}]$

- x = [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 41 & 11 \end{array}]

$- x = [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 41 & 11 \end{array}]$

Langkah 5

Kalikan kedua ruas dengan

- 1

$- 1$ .

- - x = - [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 41 & 11 \end{array}]

$- - x = - [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 41 & 11 \end{array}]$

Langkah 6

Sederhanakan.

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Langkah 6.1

Kalikan

- - x

$- - x$ .

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Langkah 6.1.1

Kalikan

- 1

$- 1$ dengan

- 1

$- 1$ .

1 x = - [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 41 & 11 \end{array}]

$1 x = - [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 41 & 11 \end{array}]$

Langkah 6.1.2

Kalikan

x

$x$ dengan

1

$1$ .

x = - [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 41 & 11 \end{array}]

$x = - [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 41 & 11 \end{array}]$

x = - [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 41 & 11 \end{array}]

$x = - [\begin{array}{c} - 12 & - 13 \\ - 29 & 9 \\ - 41 & 11 \end{array}]$

Langkah 6.2

Kalikan

- 1

$- 1$ dengan setiap elemen di dalam matriks tersebut.

x = [\begin{array}{c} - - 12 & - - 13 \\ - - 29 & - 1 \cdot 9 \\ - - 41 & - 1 \cdot 11 \end{array}]

$x = [\begin{array}{c} - - 12 & - - 13 \\ - - 29 & - 1 \cdot 9 \\ - - 41 & - 1 \cdot 11 \end{array}]$

Langkah 6.3

Sederhanakan setiap elemen dalam matriks.

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Langkah 6.3.1

Kalikan

- 1

$- 1$ dengan

- 12

$- 12$ .

x = [\begin{array}{c} 12 & - - 13 \\ - - 29 & - 1 \cdot 9 \\ - - 41 & - 1 \cdot 11 \end{array}]

$x = [\begin{array}{c} 12 & - - 13 \\ - - 29 & - 1 \cdot 9 \\ - - 41 & - 1 \cdot 11 \end{array}]$

Langkah 6.3.2

Kalikan

- 1

$- 1$ dengan

- 13

$- 13$ .

x = [\begin{array}{c} 12 & 13 \\ - - 29 & - 1 \cdot 9 \\ - - 41 & - 1 \cdot 11 \end{array}]

$x = [\begin{array}{c} 12 & 13 \\ - - 29 & - 1 \cdot 9 \\ - - 41 & - 1 \cdot 11 \end{array}]$

Langkah 6.3.3

Kalikan

- 1

$- 1$ dengan

- 29

$- 29$ .

x = [\begin{array}{c} 12 & 13 \\ 29 & - 1 \cdot 9 \\ - - 41 & - 1 \cdot 11 \end{array}]

$x = [\begin{array}{c} 12 & 13 \\ 29 & - 1 \cdot 9 \\ - - 41 & - 1 \cdot 11 \end{array}]$

Langkah 6.3.4

Kalikan

- 1

$- 1$ dengan

9

$9$ .

x = [\begin{array}{c} 12 & 13 \\ 29 & - 9 \\ - - 41 & - 1 \cdot 11 \end{array}]

$x = [\begin{array}{c} 12 & 13 \\ 29 & - 9 \\ - - 41 & - 1 \cdot 11 \end{array}]$

Langkah 6.3.5

Kalikan

- 1

$- 1$ dengan

- 41

$- 41$ .

x = [\begin{array}{c} 12 & 13 \\ 29 & - 9 \\ 41 & - 1 \cdot 11 \end{array}]

$x = [\begin{array}{c} 12 & 13 \\ 29 & - 9 \\ 41 & - 1 \cdot 11 \end{array}]$

Langkah 6.3.6

Kalikan

- 1

$- 1$ dengan

11

$11$ .

x = [\begin{array}{c} 12 & 13 \\ 29 & - 9 \\ 41 & - 11 \end{array}]

$x = [\begin{array}{c} 12 & 13 \\ 29 & - 9 \\ 41 & - 11 \end{array}]$

x = [\begin{array}{c} 12 & 13 \\ 29 & - 9 \\ 41 & - 11 \end{array}]

$x = [\begin{array}{c} 12 & 13 \\ 29 & - 9 \\ 41 & - 11 \end{array}]$

x = [\begin{array}{c} 12 & 13 \\ 29 & - 9 \\ 41 & - 11 \end{array}]

$x = [\begin{array}{c} 12 & 13 \\ 29 & - 9 \\ 41 & - 11 \end{array}]$