# Equation

Here is some regularly sized text for comparison.
**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 "/mathoid/local/v1/":): E=mc^{2}**

**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 "/mathoid/local/v1/":): {\displaystyle x = \frac{-b\pm\sqrt{b^2-4ac\ }}{2a} /h}**

**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 "/mathoid/local/v1/":): {\displaystyle \Phi(x)=\frac{1}{\sqrt{2\pi}} \int_{-\infty}^x e^{-t^2/2} \, \mathrm dt}**