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High School

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H为△ABC的垂心,HD⊥AB,E和H关于BC对称。P、Q是△ADE的外接圆与BC的交点。证明CP=CQ 2025-6-23 19:02 乌贼

Pure Mathematics

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含三角函数的几个极限 2025-6-23 10:21 hbghlyj

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Technology

TeX / LaTeX

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请教在tikz中怎么把一个指向node.north的箭头向右移动一小段？ 2025-6-18 21:45 kuing

Mathematica

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给一个小数值，能否找到最接近于它的$a+b\sqrt{c}$的有理数$a,b,c$ 2025-6-23 09:03 hbghlyj

Programming

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official MathJax v4.0 will be released in July 2025-6-23 13:44 hbghlyj

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Applied Mathematics

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What’s the difference between B-tree and B+tree? 2025-6-23 00:11 hbghlyj

Site Support

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仿[博士数学论坛]添加了[概念定理版] 2025-6-20 17:20 hbghlyj

Casual Talk

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心里苦了5年了 2025-6-22 16:57 大白兔奶糖

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Formatting Test

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如果想对一段内容着重强调，应该怎么弄比较好呢？ 2025-5-16 23:56 kuing

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