Insert LaTex mathematics expression in blogspot

I find the solution from here:

Use a script to generate an image that can be embedded in your blog post. You can use MimeTex, or the version modified by Shital Shah. You can install the script on your computer, or use an external server (Shital's can be used freely). In order to use the latter, just write in the HTML source of your post

<img src="http://shitalshah.com/?$LaTeX code here$">

Enjoy it please!