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Consider a $3\times 3$ matrix with every element being equal to 1 , its only non-zero eigenvalue is ....? $3\times 3 \begin{bmatrix} 1 & 1 &1 \\ 1 &1 &1 \\ 1 &1 &1 \end{bmatrix}$ ... but i got different eigen values why this happened ... i missed something ??
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