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可分解为一次因式乘积的行列式

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青青子衿 posted 2022-8-20 21:10 |Read mode
Last edited by 青青子衿 2023-1-14 14:46\begin{align*}
\begin{vmatrix}
a & b & c & d \\
b & a & d & c \\
c & d & a & b \\
d & c & b & a \\
\end{vmatrix}\cdot
\begin{vmatrix}
a & b & c & -d \\
b & a & -d & c \\
c & -d & a & b \\
-d & c & b & a \\
\end{vmatrix}
\end{align*}

\begin{align*}
\begin{vmatrix}
-1 & 1 & 1 & 1 & a^2 \\
1 & -1 & 1 & 1 & b^2 \\
1 & 1 & -1 & 1 & c^2 \\
1 & 1 & 1 & -1 & d^2 \\
a^2 & b^2 & c^2 & d^2 & 2 a b c d
\end{vmatrix}\cdot
\begin{vmatrix}
-1 & 1 & 1 & 1 & a^2 \\
1 & -1 & 1 & 1 & b^2 \\
1 & 1 & -1 & 1 & c^2 \\
1 & 1 & 1 & -1 & d^2 \\
a^2 & b^2 & c^2 & d^2 & -2 a b c d
\end{vmatrix}
\end{align*}

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