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本世纪惟一的完全平方数年 $2025$

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isee posted 2024-12-29 13:42 |Read mode
同时我们将 $2025$ 展开 \begin{gather*}
2025=\\
(0+1+2+3+4+5+6+7+8+9)(9+8+7+6+5+4+3+2+1+0)
\end{gather*}

如照铜镜.

又或看似双双对对 \[2025={\large 2}\int_0^{1+2+3+4+5+6+7+8+9}x\,\mathrm dx,\] 皆从零开始~
isee=freeMaths@知乎

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爪机专用 posted 2025-1-3 12:18
你不说我还真不会注意到2025是个完全平方😳

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数论方面我真没什么数感😆  posted 2025-1-3 16:13
I am majia of kuing

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original poster isee posted 2025-1-3 14:55
爪机专用 发表于 2025-1-3 12:18
你不说我还真不会注意到2025是个完全平方😳
😀
25年到了~
isee=freeMaths@知乎

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