Sandpit

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \sum_{\pi}}

\begin{equation} a = mx +c \int \end{equation}

add + 1 +2 +3

Notes

[edit]