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基础数学 今日: 8 |主题: 32808|排名: 3 

版主: luyuanhong
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预览 [挑战]如何求出圆管尖角的表面积?已知答案求过程。 attachment  ...2 rq28 2009-11-4 08:31 117691 rq28 2009-11-6 17:14
预览 求解三角形周长(平几),THANKS! dodonaomik 2009-11-6 09:17 43716 luyuanhong 2009-11-6 16:18
预览 这个方向导数有没有能算的? attachment flysl 2009-11-5 23:38 84214 flysl 2009-11-6 15:41
预览 [讨论][分享][公告][原创]:【全息元黄金理素论】 changbaoyu 2009-11-5 22:46 23208 changbaoyu 2009-11-6 14:10
预览 [讨论]一个三角函数的题 iambright 2009-11-6 13:27 03148 iambright 2009-11-6 13:27
预览 给尚九天先生发的短消息  ...2 大傻8888888 2009-10-24 11:26 177185 大傻8888888 2009-11-6 13:24
预览 平面图形的面积? attachment 许多多 2009-11-6 11:40 23364 drc2000 2009-11-6 12:36
预览 求助 koukou8617 2009-11-6 10:41 04684 koukou8617 2009-11-6 10:41
预览 [讨论]共轭函数——大师遗忘的角落? denglongshan 2009-9-14 20:20 23146 denglongshan 2009-11-5 22:22
预览 求多变量的单调函数的复合函数的单调性 attachment jiaowazi 2009-11-3 10:14 95416 jiaowazi 2009-11-5 20:37
预览 我解决了数学世界难题 ---蛋圆二次曲线轨迹方程 东方红 2009-11-5 20:31 03083 东方红 2009-11-5 20:31
预览 [求助]陆教授及网友们,谁能告诉我,N是否属于A  ...23456 zhaolu48 2009-11-2 07:57 5516220 jzkyllcjl 2009-11-5 16:32
预览 [致望羊客] 天然几何面 尚九天 2009-11-4 04:05 94225 尚九天 2009-11-5 15:55
预览 回归公式 attach_img yjc 2009-11-5 13:02 33636 luyuanhong 2009-11-5 15:51
预览 [灌水]庆祝fleurly成为[数学中国银行杰出客户] fleurly 2009-11-5 11:24 23191 fleurly 2009-11-5 15:20
预览 请教一个决策论问题 skysolor 2009-11-5 14:14 02915 skysolor 2009-11-5 14:14
预览 [求助]极限小问题 attachment gaojingang 2009-11-1 22:12 23062 gaojingang 2009-11-5 12:43
预览 [原创]再论两集不对等就更谈不上相等 attachment  ...2 hxl268 2009-9-6 22:52 105509 fleurly 2009-11-5 11:27
预览 二次曲面 hejialun 2009-11-5 01:46 13143 fleurly 2009-11-5 11:25
预览 请数学中国马上删除这个网名——王羊克他爹 attachment  ...234 波浪 2009-10-13 21:43 3812158 波浪 2009-11-5 06:56
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\frac{\square}{\square}\sqrt{\square}\square_{\baguet}^{\baguet}\overarc{\square}\ \dot{\baguet}\left(\square\right)\binom{\square}{\square}\begin{cases}\square\\\square\end{cases}\ \begin{bmatrix}\square&\square\\\square&\square\end{bmatrix}\to\Rightarrow\mapsto\alpha\ \theta\ \pi\times\div\pm\because\angle\ \infty
\frac{\square}{\square}\sqrt{\square}\sqrt[\baguet]{\square}\square_{\baguet}\square^{\baguet}\square_{\baguet}^{\baguet}\sum_{\baguet}^{\baguet}\prod_{\baguet}^{\baguet}\coprod_{\baguet}^{\baguet}\int_{\baguet}^{\baguet}\lim_{\baguet}\lim_{\baguet}^{\baguet}\bigcup_{\baguet}^{\baguet}\bigcap_{\baguet}^{\baguet}\bigwedge_{\baguet}^{\baguet}\bigvee_{\baguet}^{\baguet}
\underline{\square}\overline{\square}\overrightarrow{\square}\overleftarrow{\square}\overleftrightarrow{\square}\underrightarrow{\square}\underleftarrow{\square}\underleftrightarrow{\square}\dot{\baguet}\hat{\baguet}\vec{\baguet}\tilde{\baguet}
\left(\square\right)\left[\square\right]\left\{\square\right\}\left|\square\right|\left\langle\square\right\rangle\left\lVert\square\right\rVert\left\lfloor\square\right\rfloor\left\lceil\square\right\rceil\binom{\square}{\square}\boxed{\square}
\begin{cases}\square\\\square\end{cases}\begin{matrix}\square&\square\\\square&\square\end{matrix}\begin{pmatrix}\square&\square\\\square&\square\end{pmatrix}\begin{bmatrix}\square&\square\\\square&\square\end{bmatrix}\begin{Bmatrix}\square&\square\\\square&\square\end{Bmatrix}\begin{vmatrix}\square&\square\\\square&\square\end{vmatrix}\begin{Vmatrix}\square&\square\\\square&\square\end{Vmatrix}\begin{array}{l|l}\square&\square\\\hline\square&\square\end{array}
\to\gets\leftrightarrow\nearrow\searrow\downarrow\uparrow\updownarrow\swarrow\nwarrow\Leftarrow\Rightarrow\Leftrightarrow\rightharpoonup\rightharpoondown\impliedby\implies\Longleftrightarrow\leftharpoonup\leftharpoondown\longleftarrow\longrightarrow\longleftrightarrow\Uparrow\Downarrow\Updownarrow\hookleftarrow\hookrightarrow\mapsto
\alpha\beta\gamma\Gamma\delta\Delta\epsilon\varepsilon\zeta\eta\theta\Theta\iota\kappa\varkappa\lambda\Lambda\mu\nu\xi\Xi\pi\Pi\varpi\rho\varrho\sigma\Sigma\tau\upsilon\Upsilon\phi\Phi\varphi\chi\psi\Psi\omega\Omega\digamma\vartheta\varsigma\mathbb{C}\mathbb{H}\mathbb{N}\mathbb{P}\mathbb{Q}\mathbb{R}\mathbb{Z}\Re\Im\aleph\partial\nabla
\times\cdot\ast\div\pm\mp\circ\backslash\oplus\ominus\otimes\odot\bullet\varnothing\neq\equiv\not\equiv\sim\approx\simeq\cong\geq\leq\ll\gg\succ\prec\in\ni\cup\cap\subset\supset\not\subset\not\supset\notin\not\ni\subseteq\supseteq\nsubseteq\nsupseteq\sqsubset\sqsupset\sqsubseteq\sqsupseteq\sqcap\sqcup\wedge\vee\neg\forall\exists\nexists\uplus\bigsqcup\bigodot\bigotimes\bigoplus\biguplus\bigcap\bigcup\bigvee\bigwedge
\because\therefore\angle\parallel\perp\top\nparallel\measuredangle\sphericalangle\diamond\diamondsuit\doteq\propto\infty\bowtie\square\smile\frown\bigtriangledown\triangle\triangleleft\triangleright\bigcirc \wr\amalg\models\preceq\mid\nmid\vdash\dashv\nless\ngtr\ldots\cdots\vdots\ddots\surd\ell\flat\sharp\natural\wp\clubsuit\heartsuit\spadesuit\oint\lfloor\rfloor\lceil\rceil\lbrace\rbrace\lbrack\rbrack\vert\hbar\aleph\dagger\ddagger

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