how do i post equations on here, is there an equation editor?

[higby]

how do i type equations and post them, like fraction form?

 

[procyon]

to type in a fraction use \dfrac{x}{y} in the tex tags

The above will give \(\displaystyle \dfrac{x}{y}\)

I found this site helpful for learning LaTeX, but others probably know of better ones

http://www.thestudentroom.co.uk/wiki/LaTex