Topics 243 
数学的乐趣
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 | 请问这个向量求导的结果是怎么得到的？ huzhikuizainali Feb 22, 2022 Lastly replied by huzhikuizainali | 9 |
 | 使用泊松分布计算和概率直接相乘有什么区别 DuDuDu0o0 Feb 21, 2022 Lastly replied by necomancer | 17 | /tr>
| 向量乘法为什么等同于点积？ huzhikuizainali Jul 2, 2022 Lastly replied by LiubaiQ | 12 |
| matlab 或 Python 是否有方法定义比较美观的字母下标符号？ huzhikuizainali Feb 11, 2022 |
| 两个向量之间的相关系数如何定义？ huzhikuizainali Feb 21, 2022 Lastly replied by necomancer | 4 |
| 协方差矩阵为什么可以写成累加的形式？ huzhikuizainali Feb 8, 2022 |
| 矩阵 A 列满秩必然导致 A 的奇异值均为非零？ huzhikuizainali Feb 9, 2022 Lastly replied by upojzsb | 3 |
| 截面回归是否有比较简单的例子？ huzhikuizainali Jan 25, 2022 |
| < href="/t/830392#reply7" class="topic-link" id="topic-link-830392">关于机器学习中应用线性回归的几点疑问 huzhikuizainali Jan 26, 2022 Lastly replied by huzhikuizainali | 7 |
 | 大一离散数学题求助！各种进制下，如何判断两个数相乘的结果是否正确? logiclee Feb 12, 2022 Lastly replied by albertni | 25 |
 | 「蝉语 / Cicada Language」一个可以用来辅助数学定理之证明的程序语言 xieyuheng Jan 23, 2022 Lastly replied by xieyuheng | 18 |
| 《我是如何开始关心数学基础的》 xieyuheng Jan 11, 2022 Lastly replied by xieyuheng | 13 |
 | 关于傅立叶变换的一点疑惑?（夜不能寐 liuidetmks Oct 22, 2021 Lastly replied by necomancer | 9 |
 | 平面内四个点，怎样保证能构建四角面？ zeronofreya Oct 23, 2021 Lastly replied by necomancer | 6 |
 | 各位数学大佬，请听题 devswork Aug 31, 2021 Lastly replied by SelFree | 29 |
| 组合数学属于数学地哪个分支 huzhikuizainali Jul 10, 2021 |
| Mathematica/sympy/sagemath 这三款软件求解析解哪个比较强 huzhikuizainali Nov 20, 2022 Lastly replied by dwztom | 3 |
| 究竟什么才是数学好？工科生学数学应该在哪方面多下功夫？ huzhikuizainali Jul 11, 2021 Lastly replied by huzhikuizainali | 2 |
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