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计算下列行列式:
(1)$\left|\begin{array}{cc}1 & \log _b a \\ \log _a b & 1\end{array}\right|$ ;
(2)$\left|\begin{array}{lll}0 & 0 & 2 \\ 1 & 2 & 0 \\ 3 & 4 & 0\end{array}\right|$ ;
(3)$\left|\begin{array}{llll}3 & 1 & 1 & 1 \\ 1 & 3 & 1 & 1 \\ 1 & 1 & 3 & 1 \\ 1 & 1 & 1 & 3\end{array}\right|$ .
                        
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