(Deutsch: MathJax: LaTeX Basic Tutorial und Referenz) To see how any formula was written in any question or answer, including this one, right-click on the expression and choose "Show Math As > TeX Commands". (When you do this, the '$' will not display. Make sure you add these: see the next point. There are also other ways to view the code for the formula or the whole post.) To try formatting, visi
![MathJax basic tutorial and quick reference](https://cdn-ak-scissors.b.st-hatena.com/image/square/731d9be406ad0cf5e74c444ed96bdc051d6cedd4/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fmathmeta%2FImg%2Fapple-touch-icon%402.png%3Fv%3D235bee85f44d)