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Find ∣AB∣| A B | ​ A=[−2005],B=[400−2]A = \left[ \begin{array} { c c } - 2 & 0 \\0 & 5\end{array} \right] , B = \left[ \begin{array} { c c } 4 & 0 \\0 & - 2\end{array} \right]

Question 29

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Find ∣AB∣| A B | .​ A=[−2005],B=[400−2]A = \left[ \begin{array} { c c } - 2 & 0 \\0 & 5\end{array} \right] , B = \left[ \begin{array} { c c } 4 & 0 \\0 & - 2\end{array} \right] ​


A) 80
B) 78
C) 79
D) 82
E) 81

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