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If $A=\begin{bmatrix}1 & 0&0 \\0 & 1 &0\\0&0&1 \end{bmatrix}$ then $A^{2}$=
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Sep 18, 2022
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If $A=\begin{bmatrix}1 & 0&0 \\0 & 1 &0\\0&0&1 \end{bmatrix}$ then $A^{2}$=
Difficulty: Easy
A:
$\begin{bmatrix}2 & 0&0 \\0 & 2 &0\\0&0&2 \end{bmatrix}$
B:
$\begin{bmatrix}1 & 1&1 \\1 & 1 &1\\1&1&1 \end{bmatrix}$
C:
$\begin{bmatrix}1 & 0&0\\0 & 1 &0\\0&0&1 \end{bmatrix}$
D:
$\begin{bmatrix}0 & 2&0\\1 & 2 &0\\0&0&2 \end{bmatrix}$
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ID: 63273dbaca83163ac3a11ba7