Gegeben sei der Vektorraum
$$ V=\left\{\left(\begin{array}{ll} {a} & {0} \\ {b} & {c} \end{array}\right) | a, b, c \in \mathbb{R}\right\} $$
mit den Basen
$$ \mathcal{B}_{1}=\left\{\left(\begin{array}{cc} {-1} & {0} \\ {0} & {0} \end{array}\right),\left(\begin{array}{cc} {-2} & {0} \\ {1} & {0} \end{array}\right),\left(\begin{array}{cc} {1} & {0} \\ {1} & {-1} \end{array}\right)\right\}, \quad B_{2}=\left\{\left(\begin{array}{cc} {0} & {0} \\ {0} & {2} \end{array}\right),\left(\begin{array}{cc} {-1} & {0} \\ {1} & {1} \end{array}\right),\left(\begin{array}{cc} {0} & {0} \\ {1} & {1} \end{array}\right)\right\} $$
Ich möchte hier KB1 bestimmen.
Gemacht habe ich folgendes:
\( \left(\begin{array}{ll}{\alpha} & {0} \\ {\beta} & {\gamma}\end{array}\right)=\alpha\left(\begin{array}{cc}{-1} & {0} \\ {0} & {0}\end{array}\right)+\beta\left(\begin{array}{cc}{-2} & {0} \\ {1} & {0}\end{array}\right)+\gamma\left(\begin{array}{cc}{1} & {0} \\ {1} & {-1}\end{array}\right) \)
\( \left(\begin{array}{c}{-2 \alpha-\beta+\gamma} \\ {\beta+\gamma} \\ {-\gamma}\end{array}\right) \)