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प्रश्न
The trace of the matrix \[A = \begin{bmatrix}1 & - 5 & 7 \\ 0 & 7 & 9 \\ 11 & 8 & 9\end{bmatrix}\], is
विकल्प
17
25
3
12
उत्तर
17
The trace of a matrix is the sum of the diagonal elements.
\[\left( A \right)\] = 1 + 7 + 9 = 17
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