LaTeX

So you want to put super-cool mathematical equations in your blog comments? Take a look at these links for help.

http://faq.wordpress.com/2007/02/18/can-i-put-math-or-equations-in-my-posts/

The LaTeX language
http://www.maths.tcd.ie/~dwilkins/LaTeXPrimer/

Using LaTeX is like using Equation Editor without having to use Equation editor. It’s really simple to learn, and you will find that you really only use some basic expressions like fractions \frac{numerator}{denominator} and powers ^ with and occasional multiplication dot \cdot{number}.
Plus you look very professional and get more points!