线性代数示例

[\begin{matrix} 7 & 8 \end{matrix}]

$[\begin{array}{c} 7 & 8 \end{array}]$

解题步骤 1

Multiply each element of

R_{1}

$R_{1}$ by

\frac{1}{7}

$\frac{1}{7}$ to make the entry at

1, 1

$1, 1$ a

1

$1$ .

[\begin{matrix} \frac{7}{7} & \frac{8}{7} \end{matrix}]

$[\begin{array}{c} \frac{7}{7} & \frac{8}{7} \end{array}]$

解题步骤 2

化简

R_{1}

$R_{1}$ 。

[\begin{matrix} 1 & \frac{8}{7} \end{matrix}]

$[\begin{array}{c} 1 & \frac{8}{7} \end{array}]$

$[\begin{matrix} 7 & 8 \end{matrix}]$

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线性代数 示例