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Matriceseasy
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Let D = (2005)\begin{pmatrix} 2 & 0 \\ 0 & 5 \end{pmatrix}(20​05​) (a diagonal matrix) and M = (3412)\begin{pmatrix} 3 & 4 \\ 1 & 2 \end{pmatrix}(31​42​). What is the first row of the product DMDMDM?