マトリクス

$$\begin{eqnarray*} a_{11}x+a_{12}y+a_{13}z&=& b_1\\ a_{21}x+a_{22}y+a_{23}z&=& b_2\\ a_{31}x+a_{32}y+a_{33}z&=& b_{3} \end{eqnarray*}$$

マトリクスによる表現

$$\left[\begin{array}{ccc} a_{11}& a_{12}& a_{13}\\ a_{21}& a_{22}... ...a_{33} \end{array}\right] \left[\begin{array}{c} x\\ y\\ z \end{array}\right] = \left[\begin{array}{c} b_{1}\\ b_{2}\\ b_{3} \end{array}\right]$$ (1)