Matematika Berhingga Contoh

$[\begin{array}{c} a + 10 & 9 z + 1 & 2 m \\ 6 k & 2 & 1 \end{array}] [\begin{array}{c} 9 a & 2 z & 8 m \\ 9 k & 2 & 3 \end{array}] = [\begin{array}{c} 20 & - 32 & 90 \\ 45 & 4 & 4 \end{array}]$

Langkah 1

Kalikan kedua ruas dengan $1$ .

$1 ([\begin{array}{c} a + 10 & 9 z + 1 & 2 m \\ 6 k & 2 & 1 \end{array}] [\begin{array}{c} 9 a & 2 z & 8 m \\ 9 k & 2 & 3 \end{array}]) = 1 [\begin{array}{c} 20 & - 32 & 90 \\ 45 & 4 & 4 \end{array}]$

Langkah 2

Sederhanakan.

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Langkah 2.1

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

$[\begin{array}{c} 1 (a + 10) & 1 (9 z + 1) & 1 (2 m) \\ 1 (6 k) & 1 \cdot 2 & 1 \cdot 1 \end{array}] [\begin{array}{c} 9 a & 2 z & 8 m \\ 9 k & 2 & 3 \end{array}] = 1 [\begin{array}{c} 20 & - 32 & 90 \\ 45 & 4 & 4 \end{array}]$

Langkah 2.2

Sederhanakan setiap elemen dalam matriks.

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Langkah 2.2.1

Kalikan $a + 10$ dengan $1$ .

$[\begin{array}{c} a + 10 & 1 (9 z + 1) & 1 (2 m) \\ 1 (6 k) & 1 \cdot 2 & 1 \cdot 1 \end{array}] [\begin{array}{c} 9 a & 2 z & 8 m \\ 9 k & 2 & 3 \end{array}] = 1 [\begin{array}{c} 20 & - 32 & 90 \\ 45 & 4 & 4 \end{array}]$

Langkah 2.2.2

Kalikan $9 z + 1$ dengan $1$ .

$[\begin{array}{c} a + 10 & 9 z + 1 & 1 (2 m) \\ 1 (6 k) & 1 \cdot 2 & 1 \cdot 1 \end{array}] [\begin{array}{c} 9 a & 2 z & 8 m \\ 9 k & 2 & 3 \end{array}] = 1 [\begin{array}{c} 20 & - 32 & 90 \\ 45 & 4 & 4 \end{array}]$

Langkah 2.2.3

Kalikan $2 m$ dengan $1$ .

$[\begin{array}{c} a + 10 & 9 z + 1 & 2 m \\ 1 (6 k) & 1 \cdot 2 & 1 \cdot 1 \end{array}] [\begin{array}{c} 9 a & 2 z & 8 m \\ 9 k & 2 & 3 \end{array}] = 1 [\begin{array}{c} 20 & - 32 & 90 \\ 45 & 4 & 4 \end{array}]$

Langkah 2.2.4

Kalikan $6 k$ dengan $1$ .

$[\begin{array}{c} a + 10 & 9 z + 1 & 2 m \\ 6 k & 1 \cdot 2 & 1 \cdot 1 \end{array}] [\begin{array}{c} 9 a & 2 z & 8 m \\ 9 k & 2 & 3 \end{array}] = 1 [\begin{array}{c} 20 & - 32 & 90 \\ 45 & 4 & 4 \end{array}]$

Langkah 2.2.5

Kalikan $2$ dengan $1$ .

$[\begin{array}{c} a + 10 & 9 z + 1 & 2 m \\ 6 k & 2 & 1 \cdot 1 \end{array}] [\begin{array}{c} 9 a & 2 z & 8 m \\ 9 k & 2 & 3 \end{array}] = 1 [\begin{array}{c} 20 & - 32 & 90 \\ 45 & 4 & 4 \end{array}]$

Langkah 2.2.6

Kalikan $1$ dengan $1$ .

$[\begin{array}{c} a + 10 & 9 z + 1 & 2 m \\ 6 k & 2 & 1 \end{array}] [\begin{array}{c} 9 a & 2 z & 8 m \\ 9 k & 2 & 3 \end{array}] = 1 [\begin{array}{c} 20 & - 32 & 90 \\ 45 & 4 & 4 \end{array}]$

Langkah 2.3

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

$[\begin{array}{c} a + 10 & 9 z + 1 & 2 m \\ 6 k & 2 & 1 \end{array}] [\begin{array}{c} 9 a & 2 z & 8 m \\ 9 k & 2 & 3 \end{array}] = [\begin{array}{c} 1 \cdot 20 & 1 \cdot - 32 & 1 \cdot 90 \\ 1 \cdot 45 & 1 \cdot 4 & 1 \cdot 4 \end{array}]$

Langkah 2.4

Sederhanakan setiap elemen dalam matriks.

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Langkah 2.4.1

Kalikan $20$ dengan $1$ .

$[\begin{array}{c} a + 10 & 9 z + 1 & 2 m \\ 6 k & 2 & 1 \end{array}] [\begin{array}{c} 9 a & 2 z & 8 m \\ 9 k & 2 & 3 \end{array}] = [\begin{array}{c} 20 & 1 \cdot - 32 & 1 \cdot 90 \\ 1 \cdot 45 & 1 \cdot 4 & 1 \cdot 4 \end{array}]$

Langkah 2.4.2

Kalikan $- 32$ dengan $1$ .

$[\begin{array}{c} a + 10 & 9 z + 1 & 2 m \\ 6 k & 2 & 1 \end{array}] [\begin{array}{c} 9 a & 2 z & 8 m \\ 9 k & 2 & 3 \end{array}] = [\begin{array}{c} 20 & - 32 & 1 \cdot 90 \\ 1 \cdot 45 & 1 \cdot 4 & 1 \cdot 4 \end{array}]$

Langkah 2.4.3

Kalikan $90$ dengan $1$ .

$[\begin{array}{c} a + 10 & 9 z + 1 & 2 m \\ 6 k & 2 & 1 \end{array}] [\begin{array}{c} 9 a & 2 z & 8 m \\ 9 k & 2 & 3 \end{array}] = [\begin{array}{c} 20 & - 32 & 90 \\ 1 \cdot 45 & 1 \cdot 4 & 1 \cdot 4 \end{array}]$

Langkah 2.4.4

Kalikan $45$ dengan $1$ .

$[\begin{array}{c} a + 10 & 9 z + 1 & 2 m \\ 6 k & 2 & 1 \end{array}] [\begin{array}{c} 9 a & 2 z & 8 m \\ 9 k & 2 & 3 \end{array}] = [\begin{array}{c} 20 & - 32 & 90 \\ 45 & 1 \cdot 4 & 1 \cdot 4 \end{array}]$

Langkah 2.4.5

Kalikan $4$ dengan $1$ .

$[\begin{array}{c} a + 10 & 9 z + 1 & 2 m \\ 6 k & 2 & 1 \end{array}] [\begin{array}{c} 9 a & 2 z & 8 m \\ 9 k & 2 & 3 \end{array}] = [\begin{array}{c} 20 & - 32 & 90 \\ 45 & 4 & 1 \cdot 4 \end{array}]$

Langkah 2.4.6

Kalikan $4$ dengan $1$ .

$[\begin{array}{c} a + 10 & 9 z + 1 & 2 m \\ 6 k & 2 & 1 \end{array}] [\begin{array}{c} 9 a & 2 z & 8 m \\ 9 k & 2 & 3 \end{array}] = [\begin{array}{c} 20 & - 32 & 90 \\ 45 & 4 & 4 \end{array}]$