The sandbox

This page is for free experimentation with wiki formatting.

Header1

Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle v_1=\frac{R_1}{R_1+R_3}v}

$n+1={\frac {R_{2}}{R_{3}}}$

SubHeader1

$E=mc^{2}\,$

text 1

text2

text3