If matrin \( A=\left[\begin{array}{ll}3 & 4 \\ 2 & 1 \\ 1 & 0\end{array}\right] \quad B=\left[\begin{array}{ll}1 & 3 \\ 2 & 2 \\ 3 & 1\end{array}\right] \) Find \( 3 A-2 B \)
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To do this, we multiply each element of matrix A by 3: \(3A = \left[\begin{array}{ll}3 \cdot 3 & 3 \cdot 4 \\ 3 \cdot 2 & 3 \cdot 1 \\ 3 \cdot 1 & 3 \cdot 0\end{array}\right] = \left[\begin{array}{ll}9 & 12 \\ 6 & 3 \\ 3 & 0\end{array}\right]\) Show more…
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