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Question 28

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-  Let A=[−21−1] and B=[1−10]. Find AB. \text { Let } \mathrm { A } = \left[ \begin{array} { l } - 2 \\1 \\- 1\end{array} \right] \text { and } \mathrm { B } = \left[ \begin{array} { l l l } 1 & - 1 & 0\end{array} \right] \text {. Find } \mathrm { AB } \text {. }

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