使用typora编辑数学表达式

Typora是一款简约但功能强大文档编辑工具，支持导出pdf，md，html等多种格式文本，支持markdown语法和LaTex数学表达式语法。这里着重介绍LaTex的语法。参考MathJax basic tutorial and quick reference

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基本语法

1. 行内表达式写在$…$之间，行间表达式写在$$…$$之间。
2. 使用\表示转义，例如结合前面的行内表达式可得$\alpha \in A$表示 α∈A
3. 行间表达式**$$\sum_{i=0}^n i^2 = \frac{(n^2+n)(2n+1)}{6}$\表示
   
   ∑i=0ni2=(n2+n)(2n+1)6(1)

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其它表达式

在表达式上右键可查看语法等信息

V1×V2=∣∣∣∣∣∣∣i∂X∂u∂X∂vj∂Y∂u∂Y∂vk00∣∣∣∣∣∣∣(2)

37−−√=732−1122−−−−−−√=732122⋅732−1732−−−−−−−−−−−√=732122−−−√732−1732−−−−−−√=73121−1732−−−−−−−√≈7312(1−12⋅732)(3)

n123Left0.24−1−20Center11892000Right125−81+10i(5)

min012300000101112012230123max012300123111232222333333Δ012300123110122210133210(6)

#000#500#A00#F00#080#580#A80#F80#0F0#5F0#AF0#FF0texttexttexttexttexttexttexttexttexttexttexttext#005#505#A05#F05#085#585#A85#F85#0F5#5F5#AF5#FF5texttexttexttexttexttexttexttexttexttexttexttext#00A#50A#A0A#F0A#08A#58A#A8A#F8A#0FA#5FA#AFA#FFAtexttexttexttexttexttexttexttexttexttexttexttext#00F#50F#A0F#F0F#08F#58F#A8F#F8F#0FF#5FF#AFF#FFFtexttexttexttexttexttexttexttexttexttexttexttext(7)

\enclose{horizontalstrike}{x+y}\enclose{verticalstrike}{\frac xy}\enclose{updiagonalstrike}{x+y}\enclose{downdiagonalstrike}{x+y}\enclose{horizontalstrike,updiagonalstrike}{x+y}x+yxyx+y x+y x+y (8)

x=a0+12a1+22a2+32a3+44a4+⋯(9)

详细请参考MathJax basic tutorial and quick reference,有兴趣也可以自己编辑一些有趣的表达式。

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数学符号识别工具

利用Detexify这款工具，在方框中手写数学符号，右边会给出对应的latex语法。网址Detexify