Templates/Samples/Shortcuts for LaTeX equations

[boderam]

I'm a Mac user and I'm looking for some sort of file where I could refer to a bunch of examples of LaTeX equations from PDE, Matrices, ODE, Analysis, Algebra etc. like

\frac{\hbar}{i} \frac{\partial}{\partial t} \psi (x,t) = H \psi

So I could do more cutting and pasting as opposed to writing everything out by hand. The LaTeX editors offer panels to shortcut for symbols, but I would find a text file of lots and lots of examples more useful, especially with things involving sums and integrals where it gets quite tedious to be pointing and clicking so much. Easier to have completed examples and tweak them. Anyone know where I can find a really comprehensive file with the above in mind? Thank you.

[MATLABdude]

Here's the standard Latex Cheat Sheet:
http://www.ctan.org/tex-archive/info/latexcheat/latexcheat/latexsheet.pdf

But as for copy-pasting / form-filling in equations (probably like the Office Equation Editor), you may be better off using a different editor, say, something like LyX or WinEDT.

The guys that made Equation Editor (Design Science) used to have a free \LaTeX exporter (which had the same front-end as their commercial application) called TeXaide--you'd enter your equation, and then it'd spit out the \LaTeX code for said equation. It's been discontinued, but you can probably find an old version floating out there.

Aside from that, you could start up another document, and just paste in equations that you find yourself using quite frequently.