[MARKDOWN] How to write mathematical equations to the markdown files?

I want to share useful websites about “How to write mathematical equations to the markdown files?”

Please follow intructions below
(English) http://benlansdell.github.io/computing/mathjax/
(Korean) https://junsk1016.github.io/markdown/%EC%88%98%EC%8B%9D-%EC%A0%81%EC%9A%A9%EC%8B%9C%EC%BC%9C%EC%84%9C-%ED%99%9C%EC%9A%A9%ED%95%98%EA%B8%B0/

Cautions

• In the english version, change the file name “_mathjax_support.html” into “mathjax_support.html”
  
• In both versions, complete form of the mathematical equations would not appear on the .md file. These will appear at the website you made.