For what value of ' \( x \) ', is the matrix : \[ A=\left[\begin{ar...

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For what value of ' \( x \) ', is the matrix :
\[
A=\left[\begin{array}{rrr}
0 & 1 & -2 \\
-1 & 0 & 3 \\
x & -3 & 0
\end{array}\right]
\]
a skew-symmetric matrix.
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