1.

Eigen values of \(\left[ {\begin{array}{*{20}{c}} 2&2&1\\ 1&3&1\\ 1&2&2 \end{array}} \right]\) are

A. 1, 2, 3
B. 1, 1, 2
C. 1, 1, 5
D. 2, 2, 5
Answer» D. 2, 2, 5


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