Determinantshard
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Find the determinant of the 4×44 \times 4 matrix: M=(4333343333433334)M = \begin{pmatrix} 4 & 3 & 3 & 3 \\ 3 & 4 & 3 & 3 \\ 3 & 3 & 4 & 3 \\ 3 & 3 & 3 & 4 \end{pmatrix}