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矩阵的秩

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溦澜居士 Posted at 2024-4-22 00:07:27 From the mobile phone |Read mode
求助
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Czhang271828 Posted at 2024-4-24 20:06:48
提示: 用二项式展开计算. 例如
$$
\small \begin{pmatrix}
1^3&2^3&3^3&4^3&5^3&6^3\\
2^3&3^3&4^3&5^3&6^3&7^3\\
3^3&4^3&5^3&6^3&7^3&8^3\\
4^3&5^3&6^3&7^3&8^3&9^3\\
5^3&6^3&7^3&8^3&9^3&10^3\\
6^3&7^3&8^3&9^3&10^3&11^3\\
\end{pmatrix}=
\begin{pmatrix}
1^3&3\cdot 1^2&3\cdot 1^1&1^0\\
2^3&3\cdot 2^2&3\cdot 2^1&2^0\\
3^3&3\cdot 3^2&3\cdot 3^1&3^0\\
4^3&3\cdot 4^2&3\cdot 4^1&4^0\\
5^3&3\cdot 5^2&3\cdot 5^1&5^0\\
6^3&3\cdot 6^2&3\cdot 6^1&6^0\\
\end{pmatrix}\cdot \begin{pmatrix}
0^0&1^0&2^0&3^0&4^0&5^0\\
0^1&1^1&2^1&3^1&4^1&5^1\\
0^2&1^2&2^2&3^2&4^2&5^2\\
0^3&1^3&2^3&3^3&4^3&5^3\\
\end{pmatrix}.
$$

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2025-4-20 22:25 GMT+8

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