| cc a+i b & c+i d -c+i d & a-i b |= - Vidyadip

Question

$\left|\begin{array}{cc}a+i b & c+i d \\ -c+i d & a-i b\end{array}\right|=$

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Answer

(d): We have, $\left|\begin{array}{cc}a+i b & c+i d \\ -c+i d & a-i b\end{array}\right|$

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