Đại số tuyến tính Ví dụ

$[\begin{array}{c} 6 & - 8 & 10 \\ - \frac{3}{4} & 1 & - \frac{5}{4} \end{array}]$

Bước 1

Multiply each element of $R_{1}$ by $\frac{1}{6}$ to make the entry at $1, 1$ a $1$ .

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Bước 1.1

Multiply each element of $R_{1}$ by $\frac{1}{6}$ to make the entry at $1, 1$ a $1$ .

$[\begin{array}{c} \frac{6}{6} & \frac{- 8}{6} & \frac{10}{6} \\ - \frac{3}{4} & 1 & - \frac{5}{4} \end{array}]$

Bước 1.2

Rút gọn $R_{1}$ .

$[\begin{array}{c} 1 & - \frac{4}{3} & \frac{5}{3} \\ - \frac{3}{4} & 1 & - \frac{5}{4} \end{array}]$

Bước 2

Perform the row operation $R_{2} = R_{2} + \frac{3}{4} R_{1}$ to make the entry at $2, 1$ a $0$ .

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Bước 2.1

Perform the row operation $R_{2} = R_{2} + \frac{3}{4} R_{1}$ to make the entry at $2, 1$ a $0$ .

$[\begin{array}{c} 1 & - \frac{4}{3} & \frac{5}{3} \\ - \frac{3}{4} + \frac{3}{4} \cdot 1 & 1 + \frac{3}{4} (- \frac{4}{3}) & - \frac{5}{4} + \frac{3}{4} \cdot \frac{5}{3} \end{array}]$

Bước 2.2

Rút gọn $R_{2}$ .

$[\begin{array}{c} 1 & - \frac{4}{3} & \frac{5}{3} \\ 0 & 0 & 0 \end{array}]$