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प्रश्न
Which matrix is an identity matrix?
पर्याय
\[\begin{bmatrix}1&0&0\\0&1&0\\0&0&1\end{bmatrix}\]
\[\begin{bmatrix}2&0&0\\0&2&0\\0&0&2\end{bmatrix}\]
\[\begin{bmatrix}1&1&0\\0&1&0\\0&0&1\end{bmatrix}\]
\[\begin{bmatrix}0&0&0\\0&0&0\\0&0&0\end{bmatrix}\]
MCQ
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उत्तर
The first matrix has \[1\] on every diagonal position and \[0\] elsewhere. Thus, it is an identity matrix.
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