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Matriceseasy
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Find the trace of the matrix M=(5−2137041−3)M = \begin{pmatrix} 5 & -2 & 1 \\ 3 & 7 & 0 \\ 4 & 1 & -3 \end{pmatrix}M=​534​−271​10−3​​. (Trace = sum of diagonal elements)