Determinant van $$$\left[\begin{array}{cc}5 - \lambda & 11\\11 & 25 - \lambda\end{array}\right]$$$
Gerelateerde rekenmachine: Rekenmachine voor cofactormatrix
Uw invoer
Bereken $$$\left|\begin{array}{cc}5 - \lambda & 11\\11 & 25 - \lambda\end{array}\right|$$$.
Oplossing
De determinant van een 2x2-matrix is $$$\left|\begin{array}{cc}a & b\\c & d\end{array}\right| = a d - b c$$$.
$$$\left|\begin{array}{cc}5 - \lambda & 11\\11 & 25 - \lambda\end{array}\right| = \left(5 - \lambda\right)\cdot \left(25 - \lambda\right) - \left(11\right)\cdot \left(11\right) = \lambda^{2} - 30 \lambda + 4$$$
Antwoord
$$$\left|\begin{array}{cc}5 - \lambda & 11\\11 & 25 - \lambda\end{array}\right| = \lambda^{2} - 30 \lambda + 4$$$A
Please try a new game Rotatly