Aljabar Linear Contoh

$[\begin{array}{c} 11 & - 8 \\ - 17 & - 11 \\ 8 & - 12 \\ - 2 x & 3 \end{array}] + [\begin{array}{c} - 3 & 3 \\ - 17 & 12 \\ - 19 & 8 \\ - 15 & 2 \end{array}] - [\begin{array}{c} - 13 & 18 \\ 11 & - 16 \\ 0 & - 18 \\ 13 & - 7 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 1

Tambahkan elemen yang seletak.

$[\begin{array}{c} 11 - 3 & - 8 + 3 \\ - 17 - 17 & - 11 + 12 \\ 8 - 19 & - 12 + 8 \\ - 2 x - 15 & 3 + 2 \end{array}] - [\begin{array}{c} - 13 & 18 \\ 11 & - 16 \\ 0 & - 18 \\ 13 & - 7 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 2

Simplify each element.

Ketuk untuk lebih banyak langkah...

Langkah 2.1

Kurangi $3$ dengan $11$ .

$[\begin{array}{c} 8 & - 8 + 3 \\ - 17 - 17 & - 11 + 12 \\ 8 - 19 & - 12 + 8 \\ - 2 x - 15 & 3 + 2 \end{array}] - [\begin{array}{c} - 13 & 18 \\ 11 & - 16 \\ 0 & - 18 \\ 13 & - 7 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 2.2

Tambahkan $- 8$ dan $3$ .

$[\begin{array}{c} 8 & - 5 \\ - 17 - 17 & - 11 + 12 \\ 8 - 19 & - 12 + 8 \\ - 2 x - 15 & 3 + 2 \end{array}] - [\begin{array}{c} - 13 & 18 \\ 11 & - 16 \\ 0 & - 18 \\ 13 & - 7 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 2.3

Kurangi $17$ dengan $- 17$ .

$[\begin{array}{c} 8 & - 5 \\ - 34 & - 11 + 12 \\ 8 - 19 & - 12 + 8 \\ - 2 x - 15 & 3 + 2 \end{array}] - [\begin{array}{c} - 13 & 18 \\ 11 & - 16 \\ 0 & - 18 \\ 13 & - 7 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 2.4

Tambahkan $- 11$ dan $12$ .

$[\begin{array}{c} 8 & - 5 \\ - 34 & 1 \\ 8 - 19 & - 12 + 8 \\ - 2 x - 15 & 3 + 2 \end{array}] - [\begin{array}{c} - 13 & 18 \\ 11 & - 16 \\ 0 & - 18 \\ 13 & - 7 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 2.5

Kurangi $19$ dengan $8$ .

$[\begin{array}{c} 8 & - 5 \\ - 34 & 1 \\ - 11 & - 12 + 8 \\ - 2 x - 15 & 3 + 2 \end{array}] - [\begin{array}{c} - 13 & 18 \\ 11 & - 16 \\ 0 & - 18 \\ 13 & - 7 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 2.6

Tambahkan $- 12$ dan $8$ .

$[\begin{array}{c} 8 & - 5 \\ - 34 & 1 \\ - 11 & - 4 \\ - 2 x - 15 & 3 + 2 \end{array}] - [\begin{array}{c} - 13 & 18 \\ 11 & - 16 \\ 0 & - 18 \\ 13 & - 7 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 2.7

Tambahkan $3$ dan $2$ .

$[\begin{array}{c} 8 & - 5 \\ - 34 & 1 \\ - 11 & - 4 \\ - 2 x - 15 & 5 \end{array}] - [\begin{array}{c} - 13 & 18 \\ 11 & - 16 \\ 0 & - 18 \\ 13 & - 7 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 3

Kurangkan elemen yang seletak.

$[\begin{array}{c} 8 + 13 & - 5 - 18 \\ - 34 - 11 & 1 + 16 \\ - 11 - 0 & - 4 + 18 \\ - 2 x - 15 - 13 & 5 + 7 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 4

Simplify each element.

Ketuk untuk lebih banyak langkah...

Langkah 4.1

Tambahkan $8$ dan $13$ .

$[\begin{array}{c} 21 & - 5 - 18 \\ - 34 - 11 & 1 + 16 \\ - 11 - 0 & - 4 + 18 \\ - 2 x - 15 - 13 & 5 + 7 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 4.2

Kurangi $18$ dengan $- 5$ .

$[\begin{array}{c} 21 & - 23 \\ - 34 - 11 & 1 + 16 \\ - 11 - 0 & - 4 + 18 \\ - 2 x - 15 - 13 & 5 + 7 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 4.3

Kurangi $11$ dengan $- 34$ .

$[\begin{array}{c} 21 & - 23 \\ - 45 & 1 + 16 \\ - 11 - 0 & - 4 + 18 \\ - 2 x - 15 - 13 & 5 + 7 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 4.4

Tambahkan $1$ dan $16$ .

$[\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 - 0 & - 4 + 18 \\ - 2 x - 15 - 13 & 5 + 7 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 4.5

Kurangi $0$ dengan $- 11$ .

$[\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & - 4 + 18 \\ - 2 x - 15 - 13 & 5 + 7 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 4.6

Tambahkan $- 4$ dan $18$ .

$[\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 2 x - 15 - 13 & 5 + 7 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 4.7

Kurangi $13$ dengan $- 15$ .

$[\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 2 x - 28 & 5 + 7 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 4.8

Tambahkan $5$ dan $7$ .

$[\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 2 x - 28 & 12 \end{array}] = [\begin{array}{c} 21 & - 23 \\ - 45 & 17 \\ - 11 & 14 \\ - 24 & 12 \end{array}]$

Langkah 5

Write as a linear system of equations.

$21 = 21$

$- 23 = - 23$

$- 45 = - 45$

$17 = 17$

$- 11 = - 11$

$14 = 14$

$- 2 x - 28 = - 24$

$12 = 12$

Langkah 6

Since $12 = 12$ is always true, the matrix equation has infinite solutions.

Infinite solutions satisfying $- 2 x - 28 = - 24$ .