Matematica discreta Esempi

$[\begin{array}{c} 4 & 2 & 3 & 6 & - 7 \\ 1 & 0 & 1 & 0 & 1 \end{array}]$

Passaggio 1

Multiply each element of $R_{1}$ by $\frac{1}{4}$ to make the entry at $1, 1$ a $1$ .

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Passaggio 1.1

Multiply each element of $R_{1}$ by $\frac{1}{4}$ to make the entry at $1, 1$ a $1$ .

$[\begin{array}{c} \frac{4}{4} & \frac{2}{4} & \frac{3}{4} & \frac{6}{4} & \frac{- 7}{4} \\ 1 & 0 & 1 & 0 & 1 \end{array}]$

Passaggio 1.2

Semplifica $R_{1}$ .

$[\begin{array}{c} 1 & \frac{1}{2} & \frac{3}{4} & \frac{3}{2} & - \frac{7}{4} \\ 1 & 0 & 1 & 0 & 1 \end{array}]$

Passaggio 2

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

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Passaggio 2.1

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

$[\begin{array}{c} 1 & \frac{1}{2} & \frac{3}{4} & \frac{3}{2} & - \frac{7}{4} \\ 1 - 1 & 0 - \frac{1}{2} & 1 - \frac{3}{4} & 0 - \frac{3}{2} & 1 + \frac{7}{4} \end{array}]$

Passaggio 2.2

Semplifica $R_{2}$ .

$[\begin{array}{c} 1 & \frac{1}{2} & \frac{3}{4} & \frac{3}{2} & - \frac{7}{4} \\ 0 & - \frac{1}{2} & \frac{1}{4} & - \frac{3}{2} & \frac{11}{4} \end{array}]$

Passaggio 3

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

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Passaggio 3.1

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

$[\begin{array}{c} 1 & \frac{1}{2} & \frac{3}{4} & \frac{3}{2} & - \frac{7}{4} \\ - 2 \cdot 0 & - 2 (- \frac{1}{2}) & - 2 (\frac{1}{4}) & - 2 (- \frac{3}{2}) & - 2 (\frac{11}{4}) \end{array}]$

Passaggio 3.2

Semplifica $R_{2}$ .

$[\begin{array}{c} 1 & \frac{1}{2} & \frac{3}{4} & \frac{3}{2} & - \frac{7}{4} \\ 0 & 1 & - \frac{1}{2} & 3 & - \frac{11}{2} \end{array}]$

Passaggio 4

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

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Passaggio 4.1

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

$[\begin{array}{c} 1 - \frac{1}{2} \cdot 0 & \frac{1}{2} - \frac{1}{2} \cdot 1 & \frac{3}{4} - \frac{1}{2} (- \frac{1}{2}) & \frac{3}{2} - \frac{1}{2} \cdot 3 & - \frac{7}{4} - \frac{1}{2} (- \frac{11}{2}) \\ 0 & 1 & - \frac{1}{2} & 3 & - \frac{11}{2} \end{array}]$

Passaggio 4.2

Semplifica $R_{1}$ .

$[\begin{array}{c} 1 & 0 & 1 & 0 & 1 \\ 0 & 1 & - \frac{1}{2} & 3 & - \frac{11}{2} \end{array}]$

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