That's a great suggestion, and it certainly works, but you don't have to actually view the source for the entire page. Each equation image in Wikipedia has LaTeX alt text, so if you're using Firefox, one way to view the LaTeX is to right-click the equation and choose Properties. The alt text will show in the pop-up window.Another tip : go in wikipedia and when you see a symbol you want to use in Latex, click on "edit" to edit the page. It will allow you to see the commands for the Latex images you are looking for. I learned a lot of Latex thanks to this.