tolong bantuu matriks di bawah ini
Jawab:
[tex]A\cdot B=\begin{bmatrix}\bf1&\bf10\\ \bf-6&\bf10\end{bmatrix}[/tex]
(opsi b)
Penjelasan dengan langkah-langkah:
Operasi Perkalian Matriks (Dot Product)
[tex]\begin{aligned}A\cdot B&=\begin{bmatrix}1&3\\4&2\end{bmatrix}\cdot\begin{bmatrix}-2&1\\1&3\end{bmatrix}\\&=\begin{bmatrix}1\cdot(-2)+3\cdot1&1\cdot1+3\cdot3\\ 4\cdot(-2)+2\cdot1&4\cdot1+2\cdot3 \end{bmatrix}\\&=\begin{bmatrix}-2+3&1+9\\ -8+2&4+6 \end{bmatrix}\\&=\begin{bmatrix}\bf1&\bf10\\ \bf-6&\bf10\end{bmatrix}\end{aligned}[/tex]
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