If \( A=\left[\begin{array}{cc}1 & \log _{b} a \\ \log _{a} b & 1\end{array}\right] \), then fin...

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If \( A=\left[\begin{array}{cc}1 & \log _{b} a \\ \log _{a} b & 1\end{array}\right] \), then find \( |A| \)
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