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---
layout: post
title: LaTex渲染的说明和测试
date: 2019-07-24
Author: 来自中世界
tags: [sample, document]
comments: true
---
LaTeX渲染已经在全站头部文件引入可以直接使用公式块上下使用`$$`标明,内联公式则用`$`.
最好不要让公式出现在文章摘要里。
Jekyll的默认文章摘要是第一段但是我在使用中发现它选取摘要不是很稳定因此加入了手动摘要分割线默认为`<!-- more -->`,并且加入了首页摘要的字符数限制。
因此有特殊符号、内容的文章,建议将这些内容折叠在摘要以下。例如本文
<!-- more -->
Block math test
```
$$
\begin{align*}
y = y(x,t) &= A e^{i\theta} \\
&= A (\cos \theta + i \sin \theta) \\
&= A (\cos(kx - \omega t) + i \sin(kx - \omega t)) \\
&= A\cos(kx - \omega t) + i A\sin(kx - \omega t) \\
&= A\cos \Big(\frac{2\pi}{\lambda}x - \frac{2\pi v}{\lambda} t \Big) + i A\sin \Big(\frac{2\pi}{\lambda}x - \frac{2\pi v}{\lambda} t \Big) \\
&= A\cos \frac{2\pi}{\lambda} (x - v t) + i A\sin \frac{2\pi}{\lambda} (x - v t)
\end{align*}
$$
```
$$
\begin{align*}
y = y(x,t) &= A e^{i\theta} \\
&= A (\cos \theta + i \sin \theta) \\
&= A (\cos(kx - \omega t) + i \sin(kx - \omega t)) \\
&= A\cos(kx - \omega t) + i A\sin(kx - \omega t) \\
&= A\cos \Big(\frac{2\pi}{\lambda}x - \frac{2\pi v}{\lambda} t \Big) + i A\sin \Big(\frac{2\pi}{\lambda}x - \frac{2\pi v}{\lambda} t \Big) \\
&= A\cos \frac{2\pi}{\lambda} (x - v t) + i A\sin \frac{2\pi}{\lambda} (x - v t)
\end{align*}
$$
Inline math test `$\lim_{x \to \infty} \exp(-x) = 0$`, $\lim_{x \to \infty} \exp(-x) = 0$