---
disqus: yueswater
---

# LaTeX 聖誕節套件

{%hackmd @themes/orangeheart %}
<style>
.likecoin-button {
position: relative;
width: 100%;
max-width: 485px;
max-height: 240px;
margin: 0 auto;
}
.likecoin-button > div {
padding-top: 49.48454%;
}
.likecoin-button > iframe {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
}
</style>

###### tags: `LaTeX`

又双叒叕是我阿岳啦！接續上次的[萬聖節套件](https://hackmd.io/@yueswater/Halloween)，這次沒有套件，而是用純手工的方式搞一個可愛的圖示！


程式碼如下：

\documentclass[11pt]{article}

\usepackage{graphicx}
\usepackage{amsmath,amsthm,amssymb}

\usepackage[a4paper,margin=1in,footskip=0.25in]{geometry}

\renewcommand\qedsymbol{\raisebox{-4pt}{\includegraphics[height=10pt]{christmas-tree}}}

%%% FONT SETTING %%%
\PassOptionsToPackage{no-math}{fontspec}
\usepackage{xeCJK}
\setmainfont[Path=./fonts/,
Numbers = OldStyle,
ItalicFont={Times New Roman Italic.ttf},
BoldFont={Times New Roman Bold.ttf},
BoldItalicFont={Times New Roman Bold Italic.ttf}]{LinLibertine_R.otf} % Set the main font of the document 
\setCJKmainfont[Path=./fonts/]{cwTeXQMing-Medium.ttf} % set the main Chinese font in the document
\setCJKfamilyfont{kai}[Path=./fonts/]{cwTeXQKai-Medium.ttf}
\newcommand{\kai}[1]{{\CJKfamily{kai}#1}}
\setCJKfamilyfont{yuan}[Path=./fonts/]{cwTeXQYuan-Medium.ttf} % yuan 
\newcommand{\yuan}[1]{{\CJKfamily{yuan}#1}}
\setCJKfamilyfont{hei}[Path=./fonts/]{cwTeXQHei-Bold.ttf}
\newcommand{\hei}[1]{{\CJKfamily{hei}#1}}
%\newfontfamily\cb{Arial} % add some font family

\usepackage{mathspec}  % Includes amsmath.
\setmathsfont(Digits)[Numbers=OldStyle]{LinLibertine_R.otf}

\begin{document}
	\noindent \textbf{Merry Christmas Proof}
	
	\begin{proof}
	Given a function as follow:
	\[
	y = \frac{\log_e\left(\frac{x}{m} -sa\right)}{r^2}
	\]
	By rearranging the equation, we can obtain:
		\begin{align*}
			yr^2 &= \log_e \left(\frac{x}{m} -sa\right)\\
			e^{yr^2} &= \frac{x}{m} -sa\\
			me^{yr^2} &= x - msa\\
			me^{rry} &= x - mas
		\end{align*}
	\end{proof}	
	
\end{document}

注意看到 `\renewcommand\qedsymbol{\raisebox{-4pt}{\includegraphics[height=10pt]{christmas-tree}}}`這行，即是將證明結束(Quod Erat Demonstrandum, QED)的符號替換成自己想要的圖片，應景一下當然要換成聖誕樹啦！希望大家會喜歡(*´Д`)つ))´∀`)

<div class="likecoin-embed likecoin-button">
<div></div>
<iframe scrolling="no" frameborder="0" src="https://button.like.co/in/embed/xiaolong70701/button?referrer=hackmd.io"></iframe>
</div>