Prakalkulus Contoh

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

Langkah 1

Perform the row operation $R_{2} = R_{2} - 2 R_{1}$ to make the entry at $2, 1$ a $0$ .

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Langkah 1.1

Perform the row operation $R_{2} = R_{2} - 2 R_{1}$ to make the entry at $2, 1$ a $0$ .

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

Langkah 1.2

Sederhanakan $R_{2}$ .

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

Langkah 2

Perform the row operation $R_{3} = R_{3} - 3 R_{1}$ to make the entry at $3, 1$ a $0$ .

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Langkah 2.1

Perform the row operation $R_{3} = R_{3} - 3 R_{1}$ to make the entry at $3, 1$ a $0$ .

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

Langkah 2.2

Sederhanakan $R_{3}$ .

$[\begin{array}{c} 1 & 2 \\ 0 & 1 \\ 0 & - 6 \end{array}]$

Langkah 3

Perform the row operation $R_{3} = R_{3} + 6 R_{2}$ to make the entry at $3, 2$ a $0$ .

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Langkah 3.1

Perform the row operation $R_{3} = R_{3} + 6 R_{2}$ to make the entry at $3, 2$ a $0$ .

$[\begin{array}{c} 1 & 2 \\ 0 & 1 \\ 0 + 6 \cdot 0 & - 6 + 6 \cdot 1 \end{array}]$

Langkah 3.2

Sederhanakan $R_{3}$ .

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

Langkah 4

Perform the row operation $R_{1} = R_{1} - 2 R_{2}$ to make the entry at $1, 2$ a $0$ .

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Langkah 4.1

Perform the row operation $R_{1} = R_{1} - 2 R_{2}$ to make the entry at $1, 2$ a $0$ .

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

Langkah 4.2

Sederhanakan $R_{1}$ .

$[\begin{array}{c} 1 & 0 \\ 0 & 1 \\ 0 & 0 \end{array}]$

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