A) \[\left[ \begin{align} & -1\,\,\,2 \\ & 2\,\,\,-1 \\ \end{align} \right]\]
B) \[\left[ \begin{align} & -1\,\,\,-2 \\ & -2\,\,\,-1 \\ \end{align} \right]\]
C) \[\left[ \begin{align} & 2\,\,\,1 \\ & 1\,\,\,1 \\ \end{align} \right]\]
D) \[\left[ \begin{align} & 1\,\,\,-2 \\ & -2\,\,\,1 \\ \end{align} \right]\]
Correct Answer: D
Solution :
[d] \[A=\left[ \begin{align} & 1\,\,\,\,2 \\ & 2\,\,\,\,1 \\ \end{align} \right]\] Adjoint of \[A=\left[ \begin{align} & 1\,\,\,\,-2 \\ & -2\,\,\,\,1 \\ \end{align} \right]\]You need to login to perform this action.
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