$$$\left[\begin{array}{cc}3 & -2\\1 & -1\end{array}\right]$$$ 的行列式

計算器將求出 $$$2$$$x$$$2$$$ 方陣 $$$\left[\begin{array}{cc}3 & -2\\1 & -1\end{array}\right]$$$ 的行列式，並顯示步驟。

計算 $$$\left|\begin{array}{cc}3 & -2\\1 & -1\end{array}\right|$$$。

2x2 矩陣的行列式為 $$$\left|\begin{array}{cc}a & b\\c & d\end{array}\right| = a d - b c$$$。

$$$\left|\begin{array}{cc}3 & -2\\1 & -1\end{array}\right| = \left(3\right)\cdot \left(-1\right) - \left(-2\right)\cdot \left(1\right) = -1$$$

$$$\left|\begin{array}{cc}3 & -2\\1 & -1\end{array}\right| = -1$$$A

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