If \( A=\left[\begin{array}{cc}a+i b & c+i d \\ -c+i d & a-i b\end{array}\right] \) and \( a^{2}...
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0If \( A=\left[\begin{array}{cc}a+i b & c+i d \\ -c+i d & a-i b\end{array}\right] \) and \( a^{2}+b^{2}+c^{2}+d^{2}=1 \), then \( A^{-1} \) is equal to
(A) \( \left[\begin{array}{cc}a-i b & -c-i d \\ -c+i d & a-i b\end{array}\right] \)
(B) \( \left[\begin{array}{cc}a+i b & -c+i d \\ -c+i d & a-i b\end{array}\right] \)
(C) \( \left[\begin{array}{cc}a-i b & c-i d \\ -c-i d & a+i b\end{array}\right] \)
(D) None of these
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