$$$\left[\begin{array}{cccc}- \sqrt{6} & 0 & 1 & 0\\0 & - \sqrt{6} & 1 & 0\\1 & 1 & - \sqrt{6} & 2\\0 & 0 & 2 & - \sqrt{6}\end{array}\right]$$$의 기약 행 사다리꼴

$$$\left[\begin{array}{cccc}- \sqrt{6} & 0 & 1 & 0\\0 & - \sqrt{6} & 1 & 0\\1 & 1 & - \sqrt{6} & 2\\0 & 0 & 2 & - \sqrt{6}\end{array}\right]$$$의 기약 행 사다리꼴 형태를 구하시오.

$$$1$$$번째 행을 $$$- \sqrt{6}$$$(으)로 나눈다: $$$R_{1} = - \frac{\sqrt{6}}{6} R_{1}$$$.

$$$\left[\begin{array}{cccc}1 & 0 & - \frac{\sqrt{6}}{6} & 0\\0 & - \sqrt{6} & 1 & 0\\1 & 1 & - \sqrt{6} & 2\\0 & 0 & 2 & - \sqrt{6}\end{array}\right]$$$

행 $$$3$$$에서 행 $$$1$$$를 뺍니다: $$$R_{3} = R_{3} - R_{1}$$$.

$$$\left[\begin{array}{cccc}1 & 0 & - \frac{\sqrt{6}}{6} & 0\\0 & - \sqrt{6} & 1 & 0\\0 & 1 & - \frac{5 \sqrt{6}}{6} & 2\\0 & 0 & 2 & - \sqrt{6}\end{array}\right]$$$

$$$2$$$번째 행을 $$$- \sqrt{6}$$$(으)로 나눈다: $$$R_{2} = - \frac{\sqrt{6}}{6} R_{2}$$$.

$$$\left[\begin{array}{cccc}1 & 0 & - \frac{\sqrt{6}}{6} & 0\\0 & 1 & - \frac{\sqrt{6}}{6} & 0\\0 & 1 & - \frac{5 \sqrt{6}}{6} & 2\\0 & 0 & 2 & - \sqrt{6}\end{array}\right]$$$

행 $$$3$$$에서 행 $$$2$$$를 뺍니다: $$$R_{3} = R_{3} - R_{2}$$$.

$$$\left[\begin{array}{cccc}1 & 0 & - \frac{\sqrt{6}}{6} & 0\\0 & 1 & - \frac{\sqrt{6}}{6} & 0\\0 & 0 & - \frac{2 \sqrt{6}}{3} & 2\\0 & 0 & 2 & - \sqrt{6}\end{array}\right]$$$

행 $$$3$$$을(를) $$$- \frac{\sqrt{6}}{4}$$$배 합니다: $$$R_{3} = - \frac{\sqrt{6}}{4} R_{3}$$$.

$$$\left[\begin{array}{cccc}1 & 0 & - \frac{\sqrt{6}}{6} & 0\\0 & 1 & - \frac{\sqrt{6}}{6} & 0\\0 & 0 & 1 & - \frac{\sqrt{6}}{2}\\0 & 0 & 2 & - \sqrt{6}\end{array}\right]$$$

$$$3$$$행에 $$$\frac{\sqrt{6}}{6}$$$를 곱한 것을 $$$1$$$행에 더한다: $$$R_{1} = R_{1} + \frac{\sqrt{6}}{6} R_{3}$$$.

$$$\left[\begin{array}{cccc}1 & 0 & 0 & - \frac{1}{2}\\0 & 1 & - \frac{\sqrt{6}}{6} & 0\\0 & 0 & 1 & - \frac{\sqrt{6}}{2}\\0 & 0 & 2 & - \sqrt{6}\end{array}\right]$$$

$$$3$$$행에 $$$\frac{\sqrt{6}}{6}$$$를 곱한 것을 $$$2$$$행에 더한다: $$$R_{2} = R_{2} + \frac{\sqrt{6}}{6} R_{3}$$$.

$$$\left[\begin{array}{cccc}1 & 0 & 0 & - \frac{1}{2}\\0 & 1 & 0 & - \frac{1}{2}\\0 & 0 & 1 & - \frac{\sqrt{6}}{2}\\0 & 0 & 2 & - \sqrt{6}\end{array}\right]$$$

행 $$$4$$$에서 행 $$$3$$$의 $$$2$$$배를 빼십시오: $$$R_{4} = R_{4} - 2 R_{3}$$$.

$$$\left[\begin{array}{cccc}1 & 0 & 0 & - \frac{1}{2}\\0 & 1 & 0 & - \frac{1}{2}\\0 & 0 & 1 & - \frac{\sqrt{6}}{2}\\0 & 0 & 0 & 0\end{array}\right]$$$

$$$4$$$행 $$$4$$$열의 원소(피벗 원소)가 $$$0$$$이므로, 행을 교환해야 합니다.

피벗 원소 아래에 있는 $$$4$$$열의 첫 번째 0이 아닌 원소를 찾으십시오.

보시다시피, 그러한 항목은 없습니다.

기약 행 사다리꼴은 $$$\left[\begin{array}{cccc}1 & 0 & 0 & - \frac{1}{2}\\0 & 1 & 0 & - \frac{1}{2}\\0 & 0 & 1 & - \frac{\sqrt{6}}{2}\\0 & 0 & 0 & 0\end{array}\right]\approx \left[\begin{array}{cccc}1 & 0 & 0 & -0.5\\0 & 1 & 0 & -0.5\\0 & 0 & 1 & -1.224744871391589\\0 & 0 & 0 & 0\end{array}\right]$$$A입니다.