Algebra Archive: Questions from December 06, 2023
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heeelp!
Problema 4. Sea \( A_{k}=\left(\begin{array}{rrr}2 & 0 & 3 \\ k & -1 & 2 \\ 1 & 1 & k\end{array}\right) \). (a) Encuentre todos los valores de \( k \in \mathbb{R} \) tal que \( A_{k} \) es invertible.1 answer -
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\[ A=\left[\begin{array}{ccc} 4 & 5 & 0 \\ -2 & 3 & 5 \end{array}\right] \quad B=\left[\begin{array}{cc} 2 & 1 \\ 4 & -7 \\ 5 & 0 \end{array}\right] \] (a) Find \( A B \) if possible. (b) Find \( B A1 answer -
\[ A=\left[\begin{array}{ccc} -6 & 0 & 7 \\ -7 & 0 & -1 \\ -6 & -4 & 2 \end{array}\right] \quad B=\left[\begin{array}{c} -4 \\ 7 \\ -1 \end{array}\right] \] (a) Find \( A B \) if possible. (b) Find \(1 answer -
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