Algebra lineare Esempi

$[\begin{array}{c} 1 & 1 & 1 & 180 \\ 1 & 0 & - 1 & 59 \\ - 1 & - 1 & 1 & 8 \end{array}]$

Passaggio 1

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

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Passaggio 1.1

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

$[\begin{array}{c} 1 & 1 & 1 & 180 \\ 1 - 1 & 0 - 1 & - 1 - 1 & 59 - 180 \\ - 1 & - 1 & 1 & 8 \end{array}]$

Passaggio 1.2

Semplifica $R_{2}$ .

$[\begin{array}{c} 1 & 1 & 1 & 180 \\ 0 & - 1 & - 2 & - 121 \\ - 1 & - 1 & 1 & 8 \end{array}]$

Passaggio 2

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

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Passaggio 2.1

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

$[\begin{array}{c} 1 & 1 & 1 & 180 \\ 0 & - 1 & - 2 & - 121 \\ - 1 + 1 \cdot 1 & - 1 + 1 \cdot 1 & 1 + 1 \cdot 1 & 8 + 1 \cdot 180 \end{array}]$

Passaggio 2.2

Semplifica $R_{3}$ .

$[\begin{array}{c} 1 & 1 & 1 & 180 \\ 0 & - 1 & - 2 & - 121 \\ 0 & 0 & 2 & 188 \end{array}]$

Passaggio 3

Multiply each element of $R_{2}$ by $- 1$ to make the entry at $2, 2$ a $1$ .

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Passaggio 3.1

Multiply each element of $R_{2}$ by $- 1$ to make the entry at $2, 2$ a $1$ .

$[\begin{array}{c} 1 & 1 & 1 & 180 \\ - 0 & - - 1 & - - 2 & - - 121 \\ 0 & 0 & 2 & 188 \end{array}]$

Passaggio 3.2

Semplifica $R_{2}$ .

$[\begin{array}{c} 1 & 1 & 1 & 180 \\ 0 & 1 & 2 & 121 \\ 0 & 0 & 2 & 188 \end{array}]$

Passaggio 4

Multiply each element of $R_{3}$ by $\frac{1}{2}$ to make the entry at $3, 3$ a $1$ .

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Passaggio 4.1

Multiply each element of $R_{3}$ by $\frac{1}{2}$ to make the entry at $3, 3$ a $1$ .

$[\begin{array}{c} 1 & 1 & 1 & 180 \\ 0 & 1 & 2 & 121 \\ \frac{0}{2} & \frac{0}{2} & \frac{2}{2} & \frac{188}{2} \end{array}]$

Passaggio 4.2

Semplifica $R_{3}$ .

$[\begin{array}{c} 1 & 1 & 1 & 180 \\ 0 & 1 & 2 & 121 \\ 0 & 0 & 1 & 94 \end{array}]$

Passaggio 5

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

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Passaggio 5.1

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

$[\begin{array}{c} 1 & 1 & 1 & 180 \\ 0 - 2 \cdot 0 & 1 - 2 \cdot 0 & 2 - 2 \cdot 1 & 121 - 2 \cdot 94 \\ 0 & 0 & 1 & 94 \end{array}]$

Passaggio 5.2

Semplifica $R_{2}$ .

$[\begin{array}{c} 1 & 1 & 1 & 180 \\ 0 & 1 & 0 & - 67 \\ 0 & 0 & 1 & 94 \end{array}]$

Passaggio 6

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

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Passaggio 6.1

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

$[\begin{array}{c} 1 - 0 & 1 - 0 & 1 - 1 & 180 - 94 \\ 0 & 1 & 0 & - 67 \\ 0 & 0 & 1 & 94 \end{array}]$

Passaggio 6.2

Semplifica $R_{1}$ .

$[\begin{array}{c} 1 & 1 & 0 & 86 \\ 0 & 1 & 0 & - 67 \\ 0 & 0 & 1 & 94 \end{array}]$

Passaggio 7

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

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Passaggio 7.1

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

$[\begin{array}{c} 1 - 0 & 1 - 1 & 0 - 0 & 86 + 67 \\ 0 & 1 & 0 & - 67 \\ 0 & 0 & 1 & 94 \end{array}]$

Passaggio 7.2

Semplifica $R_{1}$ .

$[\begin{array}{c} 1 & 0 & 0 & 153 \\ 0 & 1 & 0 & - 67 \\ 0 & 0 & 1 & 94 \end{array}]$