cool LaTeX aid site

[galactus]

Here is a great site to help with LaTeX. If you do not know the code for a LaTeX symbol, simply draw it in the box and the code will be displayed.

I doubt if everything is there, but the most useful are.

http://detexify.kirelabs.org/en/classify

By the way, if anyone has ever wondered how to do cancellations in LaTeX, here are some tips. I looked around and experimented before I stumbled upon these:

\rlap{///}abc gives \(\displaystyle \rlap{///}abc\)

\frac{\rlap{|||}(x+1)(x-1)}{\rlap{|||}(x+1)} gives \(\displaystyle \frac{\rlap{|||}(x+1)(x-1)}{\rlap{|||}(x+1)}\)

Why a vertical line instead of a horizontal one, I don't know.

 

[Aladdin]

Thanks Cody, this is very usefull. :wink:

 

[soroban]

\(\displaystyle \text{The "rlap" is excellent for jokes like these:}\)

. . \(\displaystyle \frac{16}{64} \;=\;\frac{1\rlap{/}6}{\rlap{/}64} \;=\;\frac{1}{4}\)

. . \(\displaystyle \frac{26}{65}\;=\;\frac{2\rlap{/}6}{\rlap{/}65} \;=\;\frac{2}{5}\)

. . \(\displaystyle \frac{19}{95} \;=\;\frac{1\rlap{/}9}{\rlap{/}95} \;=\;\frac{1}{5}\)

. . \(\displaystyle \frac{1-x^2}{(1+x)^2} \;=\;\frac{1-x^{\rlap{/}2}}{(1+x)^{\rlap{/}2}} \;=\;\frac{1-x}{1+x}\)