Determinante de $$$\left[\begin{array}{cc}- \lambda & -1\\1 & - \lambda\end{array}\right]$$$
Calculadora relacionada: Calculadora de matriz de cofactores
Tu entrada
Calcular $$$\left|\begin{array}{cc}- \lambda & -1\\1 & - \lambda\end{array}\right|$$$.
Solución
El determinante de una matriz 2x2 es $$$\left|\begin{array}{cc}a & b\\c & d\end{array}\right| = a d - b c$$$.
$$$\left|\begin{array}{cc}- \lambda & -1\\1 & - \lambda\end{array}\right| = \left(- \lambda\right)\cdot \left(- \lambda\right) - \left(-1\right)\cdot \left(1\right) = \lambda^{2} + 1$$$
Respuesta
$$$\left|\begin{array}{cc}- \lambda & -1\\1 & - \lambda\end{array}\right| = \lambda^{2} + 1$$$A
Please try a new game Rotatly