For questions about the Mathjax LaTeX math formatting used by the site to render mathematical formulae
This site uses Mathjax, a form of \$\LaTeX\$, in order to display mathematical formulae. For example:
$$ f_0 = f_1 = 1 \\ f_n = f_{n-1} + f_{n-2} $$
Use \$
delimiters for inline formatting and $$
delimiters for block formatting
Use this tag on questions about Mathjax, including bug reports, support questions about using Mathjax and other related topics specific to Mathjax on the site.