檢視百事數學/薛期蔚的原始碼

===2020/10/15===
<img src='http://nice-learning.tw/uploadFiles/%E4%B8%8D%E9%8C%AF%E5%AD%B8%E7%BE%A4/%E6%BD%98%E5%AE%97%E5%84%80/%E8%9E%A2%E5%B9%95%E5%BF%AB%E7%85%A7%202020-10-15%20%E4%B8%8A%E5%8D%8810.24.27.png' width='*' height='*' />
===2020/10/22===
<table>
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    <td><img src='http://nice-learning.tw/uploadFiles/%e4%b8%8d%e9%8c%af%e5%ad%b8%e7%be%a4/%e7%99%be%e4%ba%8b%e6%95%b8%e5%ad%b8/%e5%88%86%e6%95%b8/frac_x%7B1%7D%7B2%7D.svg' width='*' height='*' />
</td>
    <td>+</td>
    <td><img src='http://nice-learning.tw/uploadFiles/%e4%b8%8d%e9%8c%af%e5%ad%b8%e7%be%a4/%e7%99%be%e4%ba%8b%e6%95%b8%e5%ad%b8/%e5%88%86%e6%95%b8/frac_y%7B1%7D%7B3%7D.svg' width='*' height='*' /></td>
    <td>=</td>
    <td><img src='http://nice-learning.tw/uploadFiles/%e4%b8%8d%e9%8c%af%e5%ad%b8%e7%be%a4/%e7%99%be%e4%ba%8b%e6%95%b8%e5%ad%b8/%e5%88%86%e6%95%b8/frac_%7B5%7D%7B6%7D.svg' width='*' height='*' /></td>
  </tr>
</table>