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If A=[2 5 2 1] and B=[4-3 2 5] , verify ...

If `A=[2 5 2 1]` and `B=[4-3 2 5]` , verify that `|A B|=|A||B|` .

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Consider LHS $$ \begin{aligned} &A B=\left[\begin{array}{ll} 2 & 5 \\ 2 & 1 \end{array}\right]\left[\begin{array}{cc} 4 & -3 \\ ...
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